Fancy Rats!?

Okay... I've own rats before (one was a small brown one, dunno what he was, and one huuuuge little boy that was a hooded rat.) but at that time I was really young and didn't reasearch that much on them and kept them in aquariums and such... I wanna get two female fancy rats soon and I want to take better care of them then I did with my two boys (I loved them so much though) but when I try to search for info on how to properly take care of them... I get nothing but info on snakes :/ so could someone help me out with finding reputable sites that has care info on them? Thanks! (And PLEASE... keep the answeres mature ... I know some people have problems actually doing that :/ )