Ok, im very new to this and have been reading, but am thourougly confused. Id like to start a cycle, so I figured id ask the vets. Ive been training for a few years now, have a good thick diet and a very nice regimen. I think I am set up in that aspect...could I get some help on starting a cycle. What to use, where to get it, etc.

Heres my stats

6'1
187lbs
8.5% BF
Workout 5 days a week, lots of compound movements
3800 cal a day diet
I can expand on diet/routine if neccesary.

Thanks in advance.