IMHO you need to read more than about one type of gear.
To use this stuff safely you need to become--virtually your own expert.
I do endurance sports only, now, so I need to customize everything for myself. The bros on here are a resource to bounce ideas off of, but YOU are responsible for the rest.
Check out these books--most are e-book but you need top understand the whole process--this is not like taking candy--even the mildest gear is serious stuff . There is a post cycle phase that is likely the most important part--that you must learn also.