Hey Bob. I'm a bit late, but I didn't have the same goal until just this week. Now that I am done with my summer-body plan, I am moving into a mass-gain plan that was working beautifully for me up until I changed it 16 weeks ago. IIRC, I gained about 10 lbs in around 6-7 weeks. After changing my diet and dropping body fat, I retained 8 of those pounds. Here is some of what I am doing with the same goal in mind. I will most likely make adjustments to it as I continue to learn more and gain experience.
My protein intake is roughly 200-250 grams. I eat complex carbs for my first 4 meals of the day. My goal here is to keep a calorie surplus at the end of day to grow mass, but not high enough to put on sloppy weight. I lost some definition, but it was easy to get it back. My body type is a mesomorph/endomorph.
My workouts are always intense with very short rests. No cardio when trying to gain mass. The front of my shirt is usually sweat-soaked by the third excercise. I keep a log. 15 set maximum per muscle group. Compound and isolation excercises included. Machine and free weights. I pyramid the weight up on each set, not really going all-out until my last set, just warming up and prepping the muscle for the last working set. I guess there is a high-intensity workout philosophy there. I typically use a rep scheme of 15, 12, 10. I typically don't manage to hit 10 on my last set, but it is my goal nonetheless so that I can graduate to a higher weight next time.
