If you are looking for information on how to build muscles then one of the best advice you ever get is focusing its efforts on compound exercises. Compound exercises are movements that use more than one joint. For example, the bench press is a complex exercise because both the shoulder and elbow movement. A bicep curl on the other hand, is a complex exercise as it only moves the elbow.
Compound exercises allow the use of heavy weights. Due to these factors the use of compound exercises in your training building muscle allows fast and efficient.
If your goal is to build muscle as fast as possible, recommend basing its program on compound exercises. Some good places to start are the squat, dead weight, chin-ups, and bench presses. With these 4 exercises only have stimulated most of the muscles in the body.
If you feel the need, you can throw in some curls, triceps extensions, calf raises, the work of AB, etc., but the basis of your program should include a strong emphasis on compound exercises. This is especially true for beginners.
Compound exercises are the only all most people really need, especially early-career training. You can build an impressive pair of arms only by increasing their bench press and chin-up. And as a bonus, also increased the size of his delts, lats and pecs. Improvements in the compound exercises will give you more for your money that improvements in the isolation exercises.
As always, any training program should be combined with a solid nutrition program for best results. If you are unfamiliar with the science behind the success of training and nutrition programs then it is always best to consult a professional, especially if you are struggling to put on muscle as fast as you like.