Board Thread:Support Requests - Getting Technical/@comment-25013146-20140605074747/@comment-856287-20140605223705

Also, Help:Wikitext covers the basics and has more links at the bottom.

Since Wikia is powered by MediaWiki, mw:Help:Contents will probably be helpful for getting a sense of what you can do with it.

I think the easiest way to learn is to come up with a specific goal for your code, and then start searching to find out how it can be done, or ask here on the CC forums. I can never get very excited about reading the manual and basic tutorials for any language, but if I have a specific task to complete it's much easier to stay interested and figure it all out.