As for the basic info it might be useful to have something covering the following
Chapter 1. Installation
-Install order. Patches.
-Options/Screenshot/Save Game/Mod folder under various OS
Chapter 2. Initial set up
-Graphics options
--Graphics driver settings (AA)
-Control options
--Recommended adjustments (End Mission remap, trimming trick)
-Gameplay settings
--AI difficulty
Chapter 3. Basics
-Squadron management
-Map scale
-In-flight HUD toggle
-Radio comm menu (flight structure, Red crown lingo)
Chapter 4. Tricks of the trade
-Warp vs. Time compression
-Engine fire
-Ejecting and ending mission
-Making an impact in campaign (CAS, airfield strafing etc)
Chapter 5. AI FAQ
-AI FM
-AI gunnery
-AI limitations (low level flight, parked plane attack)
Chapter 6. Mod folder structure
-Copy+rename .exe trick
Chapter 7. Known CTD/freeze conditions