=== Making Edits ===
You can make edits in one of two ways: by clicking 'Edit', which enables [http://en.wikipedia.org/wiki/WYSIWYG WYSIWYG] (or visual) editing, ala a wordprocessor, as [http://philphysics.net/index.php/Visual_Editing seen here]. Alternately, you can click 'Edit source', which allows you to edit the wiki markup in plaintext (as shown below). Use whichever method you prefer. Editing in visual mode is likely to be a little slower because the server has to translate wiki markup to html on the fly. So if things are too sluggish, you can switch over to 'Edit source'.
Wiki [http://www.mediawiki.org/wiki/Help:Formatting formatting/markup] is very straightforward, and all you need to do is mimic the current entries since formatting is standardized.