need help and advice to build a workout plan/schedule

[errorinexcellen]

Im going to turn my schedule into this

Monday - friday work and then go home and workout
saturday and sunday - either break or work out


So Im trying to think of a good workout plan/schedule to follow through for a couple of months until I can advance. I am 18 years old, 5'6 but only weighing in about 120 pounds. People see me eat and always wonder why Im not fat, I eat average or sometimes more yet I never grow and I only came to the solution that it is genetics and fast matabolism.
But Im going to try protein and multi vitamins.
I honestly am completely new to this, I have a light build with some shaping, but I havent really workout seriously for a timeframe of my life so now Im going to be doing it.

Can anyone advise or help me either through this thread or pm of a good plan to use Mon- sunday and supplements and all.
Im planning to take multi vitamins and protein.

Im looking to build my chest and arms mostly and a bit of my leg. I am more looking to gain a bit of weight and make my arms fatter and have the shape!

THanks alot

[ruga buga]

hmmm rippetoes?

[errorinexcellen]

Sorry forgot to mention

I have a chinup bar, and a simple bench that can do bench ups and I use to curl 20s but I guess I can increase that.

What are good exercise so i have

-chin up
-bench for benchpress
-free weight (whole bunch of exercise there)

[errorinexcellen]

anyone?