P90x has three different workout schedules: The P90x Classic, P90x Doubles, and P90x Lean. If you are new to P90x, it comes on 12 DVDs, which is explained in my Power 90X Extreme Training System post. It consists of high-intensity muscular workouts led by fitness instructor Tony Horton.
If you are looking to lose weight and staying lean, take a look below. If you want to build muscle with P90x take a look at the P90x Classic Workout Schedule.