References
TiddlyWiki has many references on how to work with the system. You can find those by clicking links in this text or the 'Contents' tab in the menu on the right. Start e.g. at HelloThere or learn how to work with TiddlyWiki. If you feel creative, you can check out how to customize.
Organizing your journal
You can choose to organize your Wiki Journal in multiple ways. If you prefer a chronological experimental order, have a look at Hua Jiang's Journal. This simply means creating a new entry, saving it, and copying the title of that tiddler to your journal enclosed by double square brackets.
If you want to organize your journal on e.g. a project basis, this is also possible. You will have to use tags that link your tiddlers. An example can be found here.
For this your journal page only contains the following code:
<div class="tc-table-of-contents">
<<toc-expandable "Lars ter Morsche's Journal">>
</div>Next, you can create a tiddler and add the tag [name_of_your_journal], which can be done under the title bar. The first time you have to create the tag by typing it and clicking the 'add' button. For any next tiddler you can just search for it in the list. Every tiddler that you create and tag with your journal's name will now appear in there as a menu.
Things to keep in mind:
Sharing content
Since the Wiki is web-based, we can easily share content with collaborators. To share a single tiddler or entry, use the down arrow in the top-right corner and click #Permalink. This will copy a URL to your clipboard to share a single entry.
If you want to share multiple entries at once, you can also create a view with multiple tiddlers and share this. Just open all tiddlers you want to share, close the ones that you don't, click the same arrow and go for #Permaview. The copied URL will then link to a view with all tiddlers you have currently open.