Man will occasionally stumble over the truth, but most times he will pick himself up and carry on.

Gems

• Image Mark-up Guidelines - how to insert an image
• Wikipedia Subpages - how to generate subpages (for clarity in user pages, mostly)
• Wikipedia Sections - how to force contents to show on a page
• Category - Grouping of pages by topic.
• Transclusion - The art of magic documentation.
• Magic Words - various low level wiki tags
• Parser Functions - more low level fun

Directories

• Table of Contents
• Department directory
• Contributing to Wikipedia — a guide on how you can help.
• Community Portal — Wikipedia's hub of activity.

References

• Guide to Deletion — the guide to page deletion
• Questions — a guide on where to ask questions.
• Cheatsheet — quick reference on Wikipedia's mark-up codes.
• Wikipedia's 5 pillars — an overview of Wikipedia's foundations
• The Simplified Ruleset — a summary of Wikipedia's most important rules.
• Wiki Fairy

• My WikiMedia
• My Wikibooks