If you cant get your workout/diet on point before AAS you are SPINNING YOUR WHEELS!!!!!!!
Everyone should have met realistic goals before using AAS. At least reach a bodyweight +100lbs on the bench, +200lbs squat, and bodyweight +250-300 lbs on the deadlift if NOT MORE. If you reach these goals you will have decent size. Rarely do you see a guy with much less than 16" arms benching over 300lbs.
How do you add weight to your lifts?
If there was a field behind your house with 100 rocks, and you knew that under one of those rocks was $1,000, you would turn them all over until you found the $1,000.
Weights are the same way. Keep trying rep schemes and ass. exercises until you find the ones that work for you. Write down the ones that worked for you and learn from them.
Pick the brains of the lifters that have already met those goals the WAY YOU WANT TO REACH THEM.
People are using AAS without knowing what their maintenance calories are for a given day. How can you expect to gain muscle without having any real idea what nutrition your body needs to maintain and gain weight?
Add calories to your maintenance level until you gain 3-5lbs a month. Once you get a little body fat, AFTER GAINING SOME GOOD SIZE, learn how to diet down 3-5% body fat without losing muscle.
These are just the basics. You have to know the basics.