Maybe you should clearly state what your goals are because certain methods wil bring different results. NJ is correct, resting longer between sets will help you reach the target rep range but that sacrifice in intensity may be counterproductive to what you're trying to achieve. I suggest you read all the stickies in the Training and Diet&Nutrition forums. These threads will answer almost all of your questions. You'll want to read Cowpimps thread on designing training routines and you'll want to understand periodizing techniques as well as (and most importantly) proper diet concepts. After you have this knowledge, you will have everything you need to get what you're going after.