A key starting point: Wikipedia Article Wizard

From Sydney University Press: Wiki CHEATSHEET

Wikipedia Markup Cheatsheet

Wikipedia Manual of Style (WP:MOS)

How to create Wikipedia entries that will stick

Wiki Rules

• Notability guidelines
• Conflicts of interest
• Verifiable content
• Reliability of sources

Wikipedia’s Principles

• Wikipedia:Five Pillars
• Wikipedia:Assume Good Faith
• Wikipedia:Be Bold