How tall are you? Actually it doesn't really matter. Your lack of knowledge on steroids shows your not ready to cycle. And not being a dick but your not going to get the results u think u are.
First 1 vial is not enough
Next at your current weight u should b focused on eating the right foods and getting rest. This is how to get bigger. Try to gain at least 15-20 lbs naturally first then THINK about doing a cycle. Research these boards like crazy there's TONS of info here. Logs, stickies, everything.
Also whoever your friend is, just don't listen to him anymore about roids. It's your body u have to do your own research and figure out what's best.
There's tons of natural supps out there just get u some creatine and a mass building supp and hit the weights.