kw10-I am making these assumptions on you 1) you have not worked out seriously before and 2) you are under the age of 20, maybe under 18...with that being said you are in luck!
While it is somewhat dependant on your genetics on how fast you can put the weight and strength on, if you are new to the muscle game, you will see quicker gains in the beginning.
My recommendations would be 1) don't take any supplements to start off with, just focus on eating high protein foods with all of your meals, and that is six meals a day if you can do it. Supplements have a place but not at the very beginning of training, you need to learn certain movements and acustom your body to training before they even enter the conversation. Plust with supps dont get caught in the hype of advertising as nothing is going to make you the size of Jay Cutler overnight.
2) Try training your entire body 2x a week, maybe with a split of Day 1: Chest, Bis, 2: Back, Tris, 3: Shoulders, Legs
3) Compound exercises are the most important, because you can move the most weight which stimulates the most muscle as well as your central nervous system to increase growth. These were listed in a post before, but they include chest presses, pullups, deadlifts, squats, military press. They do not include curls, or pushdowns. That does not mean that those dont have a place in your routine though.
4) If you are young and just starting working out you can get away with overtraining typically. Meaning hit it hard and long in the gym to start off, you will give your muscles no choice but to grow.
If there are any clarifications to this or if you are in need of a routine, let me know and will post, try to help anyway I can. Good luck.