I'm confused by your question.
Do you want something to help you learn, or something to help you get leaner and more muscular?
Power Drive and Spike might fit the bill when it comes to learning.
On the other hand, I favor Maximum Strength HOT-ROX and Alpha Male for improving your physique. Even more important though, is making sure you have post-workout nutrition and daily protein needs covered. For these I like Biotest Surge and Grow!, respectively.