Its nice that you openly admit that you don't have knowledge of PH's. You should read up a bit before you start. You won't regret it, your cycle will go smoother and you will avoid many of the beginner pitfalls that can affect the overall success of the cycle (happened to me). Go about this however it works for you; I'd recommend checking out the FAQs on this site, search for threads on H-drol and PCT, and google/wiki anything you haven't heard of that seems relevant.
H-drol is an excellent first choice and Helladrol is an excellent clone of it. I used it for my first cycle. If this is your first cycle then you most certainly will have a response to it, and if one day you really need something stronger, well, you've got something in your backpocket! Plus, you will have the experience under your belt to keep the cycle running smooth should any side effects rise.
Good luck bro. Be safe, have fun!