Ignorance should make you feel nervous.

I won't get into the morality or ethics of steroid use, but with any tool, if you do not know how to use it, the repurcussions can be pretty severe.

Did you know that you can overdose on Bengay? The most benign everyday items can be used to great harm, and steroids certainly fall well outside of "everyday item" in my book. This is not to say that they will cause death or cancer, but you certainly run the risks to do some pretty screwed up things to your body if you get it wrong. I would probably spend about ten times more effort studying the subject as a whole, and about 100 times the effort studying the particular steroid you are about to take.

If you only wish to get lean, I think that simply following a solid bodybuilding diet would be a much better option. If you don't have the dedication to do that much then I would say you are not likely to get any real results from steroids either.

There are no legitimate shortcuts.