If you are looking to take Anabolics for muscle building purposes, then you do need to be careful about what you take and manage cycles carefully.
This probably isn't the place to find out more about steroid use for bodybuilding and you would probably get more informed information from bodybuilding sites. Try www.mickhart.com. You can pose questions to Mick Hart, who has extensive knowledge about steroids and has himself been a competetive bodybuilder and has trained his son Chris for various competitions.
I don't know that much about Anabolics, apart from they can be effective for building muscle, with a good diet and resistance programme, but side effects are possible heart and liver problems, testicles can shrink considerably, sex drive will initially increase, but with longterm use, impotence can occur and you can get Gynaecomastia (b itch t its), as too much Testosterone can be converted to Oestrogen, so you would have to counteract this by taking a breast cancer drug.
What sort of gym programme will you be doing? Split routine mostly?