The standard mechanisms in TiddlyWiki for creating Table-of-Contents are macros known collectively as "toc" macros (click on link to learn more about macros). They use Tagging as their means of creating relationships, so be sure to review the Tagging topic tiddler if tagging is a new concept for you.

A customisable table of contents can be added to the sidebar with the following steps:

1. Create a tiddler called TableOfContents
2. Give it the tag $:/tags/SideBar
3. Set the text to

   
   <div class="tc-table-of-contents">
   
   <<toc-selective-expandable 'TableOfContents'>>
   
   </div>

4. Add a caption field with the text Contents
5. Add a list-after field with the text $:/core/ui/SideBar/Open

Add entries to the table of contents by creating tiddlers tagged TableOfContents. An easy way is to choose new here from the tiddler toolbar of the TableOfContents tiddler. (if you don't see the "new here" button, click on the down arrow to see more menu options.)

To create child tiddlers (tiddlers that come below other tiddlers), tag them with the name of the parent tiddler.