To build muscle as fast as possible, you must build strength as fast as possible.
Muscle grows over time when you load it with progressive resistance. You can provide the progression in resistance by
I know you want to build muscle as fast as possible.
Unfortunately the body probably can't build muscle as fast as you would like to have it happen.
Research shows that typical novices to progressive resistance training will only gain on average 1-2 pounds of muscle per month – that’s only one-quarter to one-half pound of muscle per week – with a wide variation between individuals.
As one passes the novice stage, the rate of gain tapers considerably as the rate of strength gains slows down and the quest to gain muscle requires more patience and persistence over a long term.
You have to build a lot of strength to build muscle.
The body is very conservative. Since muscle is expensive to build and maintain, it will build muscle only if absolutely necessary.
You won't see much if any muscle growth by increasing the resistance you use in squats, chin ups or dips by only 5, 20 or even 20 pounds. You need to think in terms of doubling, tripling and quadrupling your strength levels to build muscle.
To build big legs, chest and arms you need to think in terms of building up to 15-20 squats with 300 pounds, 6-10 chin ups or dips with 100-150 pounds added resistance, and 6-10 repetitions of overhead press with a load equal to your bodyweight.
The following training practices won't build muscle faster:
The Gaining Strength programs will enable you to build muscle. Here are some examples for novices who have little or no experience training: