diff --git a/SharpRss/Models/CategoryItem.cs b/SharpRss/Models/CategoryItem.cs
new file mode 100644
index 0000000..e61bd5a
--- /dev/null
+++ b/SharpRss/Models/CategoryItem.cs
@@ -0,0 +1,10 @@
+namespace SharpRss.Models
+{
+    public class CategoryItem
+    {
+        public string CategoryId { get; set; }
+        public string CategoryName { get; set; }
+        public string CategoryIcon { get; set; }
+        
+    }
+}
\ No newline at end of file
diff --git a/SharpRss/RssService.cs b/SharpRss/RssService.cs
index da99c92..6eea5de 100644
--- a/SharpRss/RssService.cs
+++ b/SharpRss/RssService.cs
@@ -5,6 +5,10 @@ namespace SharpRss
 {
     public class RssService
     {
+        public RssService()
+        {
+            //TODO: Check if db exists else create.
+        }
         public async void GetFeeds()
         {
             //TODO: Load from db or something.
@@ -20,5 +24,10 @@ namespace SharpRss
         }
 
         private readonly string[] _feeds = { "https://www.reddit.com/r/freshrss/.rss", "http://fedoramagazine.org/" };
+
+        private void CheckDbExist()
+        {
+            
+        }
     }
 }
\ No newline at end of file
diff --git a/WebSharpRSS/MainLayout.razor b/WebSharpRSS/MainLayout.razor
index 0bf50d7..580c5e7 100644
--- a/WebSharpRSS/MainLayout.razor
+++ b/WebSharpRSS/MainLayout.razor
@@ -11,9 +11,7 @@
         <MudText Typo="Typo.h6">SharpRSS</MudText>
     </MudAppBar>
     <MudDrawer @bind-Open="@_drawerOpen" ClipMode="DrawerClipMode.Always">
-        <MudNavMenu Color="Color.Primary">
-            <MudNavLink Href="/" Icon="@Icons.Material.Filled.Home">Home</MudNavLink>
-        </MudNavMenu>
+        <SideGuide/>
     </MudDrawer>
     <MudMainContent>
         @Body
diff --git a/WebSharpRSS/Models/CategoryTreeItem.cs b/WebSharpRSS/Models/CategoryTreeItem.cs
new file mode 100644
index 0000000..8a92080
--- /dev/null
+++ b/WebSharpRSS/Models/CategoryTreeItem.cs
@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+using CodeHollow.FeedReader;
+
+namespace WebSharpRSS.Models
+{
+    public class CategoryTreeItem
+    {
+        public string CategoryTitle { get; set; }
+        public string CategoryIcon { get; set; }
+        public bool IsExpanded { get; set; }
+        public HashSet<Feed> Feeds { get; set; } = new HashSet<Feed>() { FeedReader.ReadAsync("http://fedoramagazine.org/feed/").Result };
+    }
+}
\ No newline at end of file
diff --git a/WebSharpRSS/Models/FeedTreeItem.cs b/WebSharpRSS/Models/FeedTreeItem.cs
new file mode 100644
index 0000000..b539dfd
--- /dev/null
+++ b/WebSharpRSS/Models/FeedTreeItem.cs
@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+using CodeHollow.FeedReader;
+
+namespace WebSharpRSS.Models
+{
+    public class FeedTreeItem
+    {
+        public FeedTreeItem(Feed feed)
+        {
+            _feed = feed;
+        }
+        private readonly Feed _feed;
+    }
+}
\ No newline at end of file
diff --git a/WebSharpRSS/Pages/Index.razor b/WebSharpRSS/Pages/Index.razor
index 4e11bdf..a8c4e71 100644
--- a/WebSharpRSS/Pages/Index.razor
+++ b/WebSharpRSS/Pages/Index.razor
@@ -1,7 +1,7 @@
 @page "/"
 @inject RssService _rssService 
 
-<MudGrid Style="margin-left: 5px; margin-top: 5px">
+@*<MudGrid Style="margin-left: 5px; margin-top: 5px">
     @for (int i = 0; i < 10; i++)
     {
         <MudCard Style="margin: 3px">
@@ -18,7 +18,7 @@
         </MudCard>
     }
     
-</MudGrid>
+</MudGrid>*@
 
 @code {
     
diff --git a/WebSharpRSS/Shared/SideGuide.razor b/WebSharpRSS/Shared/SideGuide.razor
new file mode 100644
index 0000000..ba8535e
--- /dev/null
+++ b/WebSharpRSS/Shared/SideGuide.razor
@@ -0,0 +1,41 @@
+@using WebSharpRSS.Models
+@using MudBlazor.Utilities
+
+<MudList DisableGutters="true">
+    <MudListItem>
+        <MudNavMenu>
+            <MudNavLink Href="/" Icon="@Icons.Material.Filled.Home">Home</MudNavLink>
+        </MudNavMenu>
+    </MudListItem>
+    <MudDivider/>
+    <MudListItem>
+        <MudTreeView Items="Categories" Hover="true" ExpandOnClick="true" @bind-SelectedValue="SelectedItem">
+            <ItemTemplate>
+                <MudTreeViewItem @bind-Expanded="@context.IsExpanded" Icon="@context.CategoryIcon" Text="@context.CategoryTitle" Value="@context">
+                    <ChildContent>
+                        <MudTable Items="@context.Feeds">
+                            <RowTemplate Context="feedContext">
+                                <MudTd>
+                                    <MudText>@feedContext.Title</MudText>
+                                </MudTd>
+                            </RowTemplate>
+                        </MudTable>
+                    </ChildContent>
+                </MudTreeViewItem>
+            </ItemTemplate>
+        </MudTreeView>
+    </MudListItem>
+</MudList>
+
+@code {
+    public HashSet<CategoryTreeItem> Categories = new HashSet<CategoryTreeItem>();
+    protected override void OnInitialized()
+    {
+        Categories.Add(new CategoryTreeItem() { CategoryTitle = "Test cat.", CategoryIcon = Icons.Material.Filled.RssFeed });
+        Categories.Add(new CategoryTreeItem() { CategoryTitle = "Blogs", CategoryIcon = Icons.Material.Filled.RssFeed });
+        Categories.Add(new CategoryTreeItem() { CategoryTitle = "Tech", CategoryIcon = Icons.Material.Filled.Computer });
+        Categories.Add(new CategoryTreeItem() { CategoryTitle = "News", CategoryIcon = Icons.Material.Filled.Newspaper });
+    }
+
+    CategoryTreeItem SelectedItem { get; set; }
+}
\ No newline at end of file
diff --git a/WebSharpRSS/WebSharpRSS.csproj b/WebSharpRSS/WebSharpRSS.csproj
index dd3cc12..c561859 100644
--- a/WebSharpRSS/WebSharpRSS.csproj
+++ b/WebSharpRSS/WebSharpRSS.csproj
@@ -15,8 +15,4 @@
       <ProjectReference Include="..\SharpRss\SharpRss.csproj" />
     </ItemGroup>
 
-    <ItemGroup>
-      <Folder Include="Shared" />
-    </ItemGroup>
-
 </Project>
diff --git a/WebSharpRSS/_Imports.razor b/WebSharpRSS/_Imports.razor
index b2e2f6c..5ba7585 100644
--- a/WebSharpRSS/_Imports.razor
+++ b/WebSharpRSS/_Imports.razor
@@ -4,3 +4,4 @@
 @using WebSharpRSS
 @using MudBlazor
 @using SharpRss
+@using WebSharpRSS.Shared
\ No newline at end of file