I had a really good ortho guy for my braces when i got them, and i laugh at the people whos braces ACTUALLY fall off!
People may have already told you, no corn on the cob unless you take it off the cob thing..., no apples unless you cut it up, anddd.....when brushing your teeth, brush your gums, the top of the braces, and the bottom. dont just brush on the face of the braces, do the sides too. it will help if you get crap stuck in them.