You may be looking for:

• Help:Introduction
• Help:Editing
• Wikipedia:What Wikipedia is not § Wikipedia is not a manual, guidebook, textbook, or scientific journal, for an explanation that Wikipedia should not read like a guidebook
• Wikipedia:Wiki Guides, a program for guiding newcomers to become effective contributors
• Wikipedia:About, an introductory guide to Wikipedia
• Wikipedia:Policies and guidelines, a page about how Wikipedia's policy and guideline pages work
• Wikipedia:List of guidelines, a list of key Wikipedia guidelines
• Wikipedia:List of policies and guidelines, a more comprehensive list of guidelines, also including policies
• Wikipedia:WikiProject Council/Guide, advice for creating and maintaining WikiProjects
• All pages with titles beginning with Wikipedia:Guide