start at the beginning:
1. determining what to build. obviously this will depend on team size, skills, budget, time frame, etc. a guidelines or suggestions section, perhaps.
2. tool selection. choosing the right tools for the job. again, guideline and suggestions.
then maybe something on the basic "game" algo:
while ! quitgame
and then maybe the basic differences between "real time" and turn based games.
Like OO, start with your base common stuff and fan out from there