From beginners to experts, this is what I know (knew, actually. For what I know, go to p90x.iamcanadian.org).
Basic workout - This is as simple as it gets For true beginners. includes some nutrition guidelines.
Beginner to Advanced - From other sport athletes to regular gymrats. Includes my personal workout set by set.
Weekly Food Log - How to get started on your eating habits
Stretching - Some stretching that I do for my back, post surgery
Gymnastics Conditioning - Real conditioning sheets from September 08 and 09
This spreadsheet will help you keep track of all your activity, your key measurements
and your goals and rewards. It is a sheet I always use no matter how often I stop and start.
Remember that documenting your progress is KEY to staying motivated.