diff --git a/src/App.svelte b/src/App.svelte
index f019872..a8fb55a 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -12,10 +12,11 @@
     import ItemDetail from "./ItemDetail.svelte"
     import ItemList from "./ItemList.svelte"
     import AdvancedSearch from "./AdvancedSearch.svelte"
-    import { SearchIcon } from "@rgossiaux/svelte-heroicons/outline";
+    import { SearchIcon, CogIcon, BookmarkAltIcon, BookmarkIcon } from "@rgossiaux/svelte-heroicons/outline";
 
     let currentView = "/topics";
     let randomItemId;
+    let alltopics = [];
 
     function getRandomItemId(){
         fetch('/learn.json?_shape=array&sql=select+rowid+from+items+order+by+random()+limit+1').then(r => r.json())
@@ -24,6 +25,12 @@
         });
     }
 
+    $: fetch(`/learn/topics.json?_shape=array&_size=5000`)
+        .then(r => r.json())
+        .then(data => {
+            alltopics = data;
+        });
+
 	async function hashchange() {
 		// the poor man's router!
 		const path = window.location.hash.slice(1);
@@ -45,14 +52,14 @@
 
 <svelte:window on:hashchange={hashchange}/>
 
-<TailwindUI.AppShell>
+<TailwindUI.AppShell {alltopics}>
     <svelte:fragment slot="content">
         {#if currentView === "/home" || currentView === "/"}
             <Home/>
         {:else if currentView === "/game"}
             <SkillTree/>
         {:else if currentView === "/topics"}
-            <TopicList/>
+            <TopicList {alltopics}/>
         {:else if currentView.startsWith("/topic/")}
             <TopicDetail topicname={currentView.split("/").slice(2).join("/")}/>
         {:else if currentView === "/formats"}
@@ -93,17 +100,18 @@
         </a>
         <hr/>
         <a href="#/wanttolearn" class={(currentView === "/wanttolearn" ? 'bg-indigo-800' : '') + " text-white w-full hover:bg-indigo-600 group flex items-center px-2 py-2 text-sm font-medium rounded-md"}>
-            <SearchIcon class="mr-4 flex-shrink-0 h-6 w-6 text-indigo-300"/>
+            <BookmarkIcon class="mr-4 flex-shrink-0 h-6 w-6 text-indigo-300"/>
             Want to learn
         </a>
         <a href="#/finishedlearning" class={(currentView === "/finishedlearning" ? 'bg-indigo-800' : '') + " text-white w-full hover:bg-indigo-600 group flex items-center px-2 py-2 text-sm font-medium rounded-md"}>
-            <SearchIcon class="mr-4 flex-shrink-0 h-6 w-6 text-indigo-300"/>
+            <BookmarkAltIcon class="mr-4 flex-shrink-0 h-6 w-6 text-indigo-300"/>
             Finished learning
         </a>
         <hr/>
         <a href="/learn" class="text-indigo-100 hover:bg-indigo-600 w-full group flex items-center px-2 py-2 text-sm font-medium rounded-md">
-            <SearchIcon class="mr-4 flex-shrink-0 h-6 w-6 text-indigo-300"/>
+            <CogIcon class="mr-4 flex-shrink-0 h-6 w-6 text-indigo-300"/>
             Datasette
         </a>
+
     </svelte:fragment>
 </TailwindUI.AppShell>
\ No newline at end of file
diff --git a/src/SkillTree.svelte b/src/SkillTree.svelte
index b6d98f8..fa53fa3 100644
--- a/src/SkillTree.svelte
+++ b/src/SkillTree.svelte
@@ -1,90 +1,78 @@
 <script>
-	import ZoomSvg from '@svelte-parts/zoom/svg'
-    import { fly } from 'svelte/transition';
-    
-	
-	let sidePanelShown = true;
-	let currentNode = null;
-	let nodes = [
-		{id: 1, name: "test", x: 100, y: 200, size: 50, color: "#ff3e00"},
-		{id: 2, name: "second", x: 400, y: 300, size: 30, color: "#ff3eff"}
-	]
-	
-	let edges = [
-		{id: 1, from: nodes[0], to: nodes[1]}
-	]
-	
-	function handleNodeMouseEnter(ev){
-		ev.target.style.fill = "#aa3e00"
-	}
-	
-	function handleNodeMouseLeave(ev){
-		ev.target.style.fill = "#ff3e00"
-	}
-	
-	function handleNodeClick(ev){
-		sidePanelShown = true;
-		currentNode = ev.target;
-	}
+	import { scale } from 'svelte/transition';
+	import { cubicIn } from 'svelte/easing';
+
+  let graph = {
+	  name: "Top",
+	  children: [
+		  {name: "first", children: [
+			  {name: "first -> A", children: [], color: "red-500"},
+			  {name: "first -> B", children: [], color: "green-500"},
+			  {name: "first -> c", children: [], color: "yellow-500"},
+			  {name: "first -> d", children: [], color: "blue-500"},
+		  ], pos: [], size: 35, color: "green-300"},
+		  {name: "second", children: [], pos: [], size: 35, color: "red-500"},
+		  {name: "third", children: [], pos: [], size: 35, color: "yellow-500"},
+		  {name: "fourth", children: [], pos: [], size: 35, color: "teal-400"},
+	  ]
+
+  }
+  
+  let currentParent = null;
+  let currentChild = graph;
+
+  function findParent(child, tree){
+	  if(graph == child) return null;
+	  if(tree.children.indexOf(child) > -1) return tree;
+	  // Will have to look at grandchildren
+	  tree.children.forEach(c => {
+		  let x = findParent(child, c);
+		  if (x != -1) return c;
+	  });
+	  return -1;
+  }
+
+  function switchTo(parent, child){
+	  [currentParent, currentChild] = [parent, child];
+  }
+
+  function siblings(parent, child){
+	if(!parent) return [];
+	return parent.children.filter(n => n != child)
+  }
+
+
+
 </script>
 
+<div class="flex flex-col">
 
-<ZoomSvg viewBox="0 0 1200 900">
+	{#if currentParent}<div class="flex flex-row justify-center mb-4">
+		<span>
+			<button type="button" on:click="{ e => switchTo(findParent(currentParent, graph), currentParent) }" class="inline-flex items-center px-4 py-2 border border-gray-300 shadow-sm text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500">
+				{currentParent.name}
+			</button>
+		</span>
+	</div>{/if}
 
-{#each edges as edge}
-	<line x1={edge.from.x} y1={edge.from.y} x2={edge.to.x} y2={edge.to.y} stroke="black" stroke-width="5" />
-{/each}
-	
-{#each nodes as node}
-	<circle cx={node.x} cy={node.y} r={node.size} fill={node.color} on:mouseenter={handleNodeMouseEnter} on:mouseleave={handleNodeMouseLeave} on:click={handleNodeClick}/>
-{/each}
+	<h2 class="text-3xl my-4 text-center font-extrabold tracking-tight sm:text-4xl">{currentChild.name}</h2>
 
-<g>
-	<rect x="120" y="320" width="100" height="100" fill="none" stroke="black" rx="15" />
-	<text x="400" y="150" font-family="Verdana" font-size="85" fill="green" stroke="yellow">Hello</text>
-</g>
-	
-</ZoomSvg>
+	<div class="flex flex-row justify-center my-4">
+		<span class="relative z-0 inline-flex shadow-sm rounded-md">
+			{#each siblings(currentParent, currentChild) as sibling}
+			<button type="button" on:click="{ e => switchTo(currentParent, sibling) }" class="relative inline-flex items-center px-4 py-2 rounded-l-md border border-gray-300 bg-white text-sm font-medium text-gray-700 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500">
+				{sibling.name}
+			</button>
+			{/each}
+		</span>
+	</div>
 
+</div>
 
-<div class="relative z-10" aria-labelledby="slide-over-title" role="dialog" aria-modal="true">
-    <!-- Background backdrop, show/hide based on slide-over state. -->
-    {#if sidePanelShown}
-    <div class="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity"></div>
-    {/if}
-  
-    <div class="fixed inset-0 overflow-hidden">
-      <div class="absolute inset-0 overflow-hidden">
-        <div class="pointer-events-none fixed inset-y-0 right-0 flex max-w-full pl-10">
-          {#if sidePanelShown}
-          <div class="pointer-events-auto w-screen max-w-md" transition:fly="{{ x: 200, duration: 600 }}">
-            <div class="flex h-full flex-col overflow-y-scroll bg-white py-6 shadow-xl">
-              <div class="px-4 sm:px-6">
-                <div class="flex items-start justify-between">
-                  <h2 class="text-lg font-medium text-gray-900" id="slide-over-title">Panel title</h2>
-                  <div class="ml-3 flex h-7 items-center">
-                    <button on:click="{e => sidePanelShown = false}" type="button" class="rounded-md bg-white text-gray-400 hover:text-gray-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2">
-                      <span class="sr-only">Close panel</span>
-                      <!-- Heroicon name: outline/x -->
-                      <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true">
-                        <path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12" />
-                      </svg>
-                    </button>
-                  </div>
-                </div>
-              </div>
-              <div class="relative mt-6 flex-1 px-4 sm:px-6">
-                <!-- Replace with your content -->
-                <div class="absolute inset-0 px-4 sm:px-6">
-                  <div class="h-full border-2 border-dashed border-gray-200" aria-hidden="true"></div>
-                </div>
-                <!-- /End replace -->
-              </div>
-            </div>
-          </div>
-          {/if}
-        </div>
-      </div>
-    </div>
-  </div>
-  
\ No newline at end of file
+<div class="grid grid-cols-1 gap-y-0 sm:grid-cols-2 mt-4">
+	{#each currentChild.children as grandchild, i (grandchild)}
+	<button on:click="{ e => switchTo(currentChild, grandchild) }" class="h-96 bg-{grandchild.color} hover:opacity-80 hover:scale-105">
+		<h3>{grandchild.name}</h3>
+	</button>
+	{/each}
+</div>
\ No newline at end of file
diff --git a/src/TopicList.svelte b/src/TopicList.svelte
index e31e333..b4cfdfc 100644
--- a/src/TopicList.svelte
+++ b/src/TopicList.svelte
@@ -1,6 +1,7 @@
 <script>
     import TopicMasonryGrid from "./TopicMasonryGrid.svelte"
+    export let alltopics;
 </script>
 
 
-<TopicMasonryGrid />
\ No newline at end of file
+<TopicMasonryGrid {alltopics}/>
\ No newline at end of file
diff --git a/src/TopicMasonryGrid.svelte b/src/TopicMasonryGrid.svelte
index 51593c5..041e70a 100644
--- a/src/TopicMasonryGrid.svelte
+++ b/src/TopicMasonryGrid.svelte
@@ -1,7 +1,7 @@
 <script>
     export let topicname; // undefined for top level
     let topic;
-    let alltopics = [];
+    export let alltopics;
     let map = new Map();
 
     function capitalize(str){
@@ -59,12 +59,7 @@
         return tempmap;
     }
 
-    $: fetch(`/learn/topics.json?_shape=array&_size=5000`)
-        .then(r => r.json())
-        .then(data => {
-            topic = data.find(t => t.name == topicname)
-            alltopics = data;
-        });
+    $: topic = alltopics.find(t => t.name == topicname)
 
     $: map = hierarchy(alltopics, topic?.name || "")
 
diff --git a/src/tailwindui/AppShell.svelte b/src/tailwindui/AppShell.svelte
index afc207c..6ea0e25 100644
--- a/src/tailwindui/AppShell.svelte
+++ b/src/tailwindui/AppShell.svelte
@@ -4,6 +4,8 @@
     let isNavDrawerOpen = false
     export let showNotificationBell = false;
     export let showProfileMenu = false;
+    export let alltopics;
+    import SearchForm from "./SearchForm.svelte"
 
 </script>
 
@@ -87,12 +89,13 @@
       </div>
     </div>
     <div class="md:pl-64 flex flex-col flex-1">
-      <div class="sticky top-0 z-10 flex-shrink-0 flex h-16 bg-white shadow">
+      <div class="sticky top-0 z-10 flex-shrink-0 flex">
         <button on:click={e => isNavDrawerOpen = true} type="button" class="px-4 border-r border-gray-200 text-gray-500 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-indigo-500 md:hidden">
           <span class="sr-only">Open sidebar</span>
           <Icon kind="menu"/>
         </button>
-        <div class="flex-1 px-4 flex justify-between">
+        <div class="flex-1 flex justify-between">
+          <SearchForm {alltopics}/>
           {#if showNotificationBell || showProfileMenu}
           <div class="ml-4 flex items-center md:ml-6">
             {#if showNotificationBell}
diff --git a/src/tailwindui/ComboBox.svelte b/src/tailwindui/ComboBox.svelte
new file mode 100644
index 0000000..efa446e
--- /dev/null
+++ b/src/tailwindui/ComboBox.svelte
@@ -0,0 +1,44 @@
+<script>
+    export let options = [];
+    export let selected = {};
+</script>
+
+<div>
+    <div class="relative ml-2">
+      <input type="text" class="w-full rounded-md border border-gray-300 bg-white py-2 pl-3 pr-12 shadow-sm focus:border-indigo-500 focus:outline-none focus:ring-1 focus:ring-indigo-500 sm:text-sm" role="combobox" aria-controls="options" aria-expanded="false" value={selected && selected.label}>
+      <button type="button" class="absolute inset-y-0 right-0 flex items-center rounded-r-md px-2 focus:outline-none">
+        <!-- Heroicon name: solid/selector -->
+        <svg class="h-5 w-5 text-gray-400" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
+          <path fill-rule="evenodd" d="M10 3a1 1 0 01.707.293l3 3a1 1 0 01-1.414 1.414L10 5.414 7.707 7.707a1 1 0 01-1.414-1.414l3-3A1 1 0 0110 3zm-3.707 9.293a1 1 0 011.414 0L10 14.586l2.293-2.293a1 1 0 011.414 1.414l-3 3a1 1 0 01-1.414 0l-3-3a1 1 0 010-1.414z" clip-rule="evenodd" />
+        </svg>
+      </button>
+  
+      <ul class="absolute z-10 mt-1 max-h-60 w-full overflow-auto rounded-md bg-white py-1 text-base shadow-lg ring-1 ring-black ring-opacity-5 focus:outline-none sm:text-sm" id="options" role="listbox">
+        {#each options as option}
+        <!--
+          Combobox option, manage highlight styles based on mouseenter/mouseleave and keyboard navigation.
+  
+          Active: "text-white bg-indigo-600", Not Active: "text-gray-900"
+        -->
+        <li class="relative cursor-default select-none py-2 pl-3 pr-9 text-gray-900" role="option" tabindex="-1">
+          <!-- Selected: "font-semibold" -->
+          <span class={(selected && selected.value == option.value ? 'font-semibold' : '') + ' block truncate'}>{option.label}</span>
+  
+          <!--
+            Checkmark, only display for selected option.
+  
+            Active: "text-white", Not Active: "text-indigo-600"
+          -->
+          {#if selected && selected.value == option.value}
+          <span class="absolute inset-y-0 right-0 flex items-center pr-4 text-indigo-600">
+            <!-- Heroicon name: solid/check -->
+            <svg class="h-5 w-5" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
+              <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd" />
+            </svg>
+          </span>
+          {/if}
+        </li>
+        {/each}
+      </ul>
+    </div>
+</div>
\ No newline at end of file
diff --git a/src/tailwindui/SearchForm.svelte b/src/tailwindui/SearchForm.svelte
index 13fc826..f4f373e 100644
--- a/src/tailwindui/SearchForm.svelte
+++ b/src/tailwindui/SearchForm.svelte
@@ -1,6 +1,15 @@
 <script>
   import Icon from "./Icon.svelte"
-  let query;
+  import ComboBox from "./ComboBox.svelte"
+  export let alltopics;
+
+  let query = {
+    text: "some text",
+    topic: "algebra",
+    format: "book",
+    level: "beginner",
+    sortby: ""
+  };
   let results = [];
 
   function handleSubmit(ev){
@@ -8,31 +17,35 @@
   }
 </script>
 
-<form class="w-full flex md:ml-0" on:submit|preventDefault={handleSubmit}>
-    <label for="search-field" class="sr-only">Search</label>
-    <div class="relative w-full text-gray-400 focus-within:text-gray-600">
-      <div class="absolute inset-y-0 left-0 flex items-center pointer-events-none">
-          <Icon kind="search"/>
-      </div>
-      <input bind:value={query} class="block w-full h-full pl-8 pr-3 py-2 border-transparent text-gray-900 placeholder-gray-500 focus:outline-none focus:placeholder-gray-400 focus:ring-0 focus:border-transparent sm:text-sm" placeholder="Search" type="search" name="search">
-    </div>
+<form class="w-full bg-gray-100 p-2 inline-flex" on:submit|preventDefault={handleSubmit}>
+    <sl-input type="search" placeholder="Type something to search items by keywords" size="medium" clearable class="flex-1 border-0 p-0 focus:ring-0" value={query.text} on:sl-input="{e => query.text = e.target.value}">
+      <sl-icon name="search" slot="prefix"></sl-icon>
+    </sl-input>
+
+    <ComboBox options={alltopics.map(t => { return {label: t.display_name, value: t.name}; }).sort((a,b) => a.label.localeCompare(b.label))} selected={null}/>
+
+    <sl-select class="ml-2 w-44"  on:sl-change="{e => query.format = e.target.value}" value={query.format}>
+      <sl-menu-item value="">Any format</sl-menu-item>
+      <sl-menu-item value="book">Books</sl-menu-item>
+      <sl-menu-item value="video">Videos</sl-menu-item>
+      <sl-menu-item value="audio">Podcasts</sl-menu-item>
+    </sl-select>
+
+    <sl-select class="ml-2 w-44"  on:sl-change="{e => query.level = e.target.value}" value={query.level}>
+      <sl-menu-item value="">Any level</sl-menu-item>
+      <sl-menu-item value="childlike">Childlike</sl-menu-item>
+      <sl-menu-item value="beginner">Beginner</sl-menu-item>
+      <sl-menu-item value="intermediate">Intermediate</sl-menu-item>
+      <sl-menu-item value="advanced">Advanced</sl-menu-item>
+      <sl-menu-item value="research">Research</sl-menu-item>
+    </sl-select>
+
+    <sl-select class="ml-2 w-44" on:sl-change="{e => query.sortby = e.target.value}" value={query.sortby}>
+      <sl-icon name="sort-down-alt" slot="prefix"></sl-icon>
+      <sl-menu-item value="">Sort by</sl-menu-item>
+      <sl-menu-item value="rating">Rating</sl-menu-item>
+      <sl-menu-item value="year">Year</sl-menu-item>
+      <sl-menu-item value="name">Name</sl-menu-item>
+    </sl-select>
 </form>
 
-<ul class="max-h-80 scroll-pt-11 scroll-pb-2 space-y-2 overflow-y-auto pb-2" id="options" role="listbox">
-  <li>
-    <h2 class="bg-gray-100 py-2.5 px-4 text-xs font-semibold text-gray-900">Clients</h2>
-    <ul class="mt-2 text-sm text-gray-800">
-      <!-- Active: "bg-indigo-600 text-white" -->
-      <li class="cursor-default select-none px-4 py-2" id="option-1" role="option" tabindex="-1">Workflow Inc.</li>
-      <li class="cursor-default select-none px-4 py-2" id="option-2" role="option" tabindex="-1">Multinational LLC.</li>
-    </ul>
-  </li>
-  <li>
-    <h2 class="bg-gray-100 py-2.5 px-4 text-xs font-semibold text-gray-900">Projects</h2>
-    <ul class="mt-2 text-sm text-gray-800">
-      <!-- Active: "bg-indigo-600 text-white" -->
-      <li class="cursor-default select-none px-4 py-2" id="option-3" role="option" tabindex="-1">Workflow Inc. / Website Redesign</li>
-      <li class="cursor-default select-none px-4 py-2" id="option-3" role="option" tabindex="-1">Multinational LLC. / Animation</li>
-    </ul>
-  </li>
-</ul>
\ No newline at end of file