Questions about P90X? Please help?

Hi, I found the 12 videos for P90X online and I was wondering is it just the 12 videos that you use? Or are there different levels depending on what week you are on? Like is there just one Cardio X video or is there 2 and 3 if you are on a later week in the program? Also, if anyone has the nutrition guide for the program is it possible to send it to me? It would be a great help. Thanks!