Dude if I were you and knowing what I know right now, I would really suggest that you very seriously consider a good hard look at your diet and a power lifting type of workout. When you start getting into steroids there is so much more then just shooting the juice. So many times guys dont put in the time for research and learning. These are powerful drugs that can really fuck you up and people just dont seem to get that. Even for guys that have had expereince there are still plenty that get pretty fucked up. I know you say to yourself that wont happen to me. But my friend the percentages are not in your favor. LIke stevesmi said read his post on bloodwork, and there are countless others that you should read too.
Dude you are only 23, you really are not ready to go on steroids yet.
But most likely you are gonna do it anyway so the best thing that I can tell you is this.
READ EVERYTHING THAT YOU CAN FINE ON HERE ABOUT TEST AND DECA CYCLES.
READ EVERYTHING ON HERE THAT YOU CAN FIND ON PCT.
PM guys like Needto, joed, Radar, etc.
And hopefully you will either A, not do a cycle yet and really learn about diet and working out,
OR
B, you will at least be educated and hopefully have a good cycle.
Good luck.