There’s a lot of information on here about first cycles already. If you google it, you’ll find them - here’s a good one:
Read like a mofo, but the long and short of it is don’t go crazy. Get blood tests before, start with Test E or C at 500 mg per week, take an AI, use HCG if having kids or nut size is important to you, have your PCT planned in advance, get blood tests after four weeks, have everything on hand before starting, and know the consequences of fucking it up.
Plan your work, work your plan.
Having everything on hand includes the right syringes, the right needles, enough Test for the cycle, an AI, HCG (if you want it), PCT drugs, and how you are going to get blood testing done.
Figure it’s going to take you at least six months to get all of the knowledge and material together, if you decide to do it. A year would be better.
And, ask yourself the why. Why are you going to do it? Is it just aesthetics? Is it to compete? Is it worth the risk for the benefit.
Good luck.