The software you are using is called MediaWiki. It is the same software that powers WikiPedia.
To create and edit articles, the best source of information is the MediaWiki site itself. Here are some of the most important starting points to help you with your editing tasks:
- Try the page on formatting to learn how to create bullet lists, bold text, headings, etc.
- Their page on linking will tell you how to create links between your wiki pages and to get your links looking the way you want them to.
- As we create pages we all need to think about what they're called. See Naming Wiki Pages for some guidelines.
- For a general overview of editing pages, start with their editing overview.
If you want a complete guide to MediaWiki, the best place to start is the User Manual.