I had braces, and like the others said, it hurts when you get them, and also when it's tightened.
I had clear brackets (the bits stuck to your teeth) so I didn't have any colours.
Also, try to follow the guidelines that they say, like don't eat anapple whole, cut it up, etc, because the brackets can come off easily(and if the dentist/orthodontist is not great they may just randomlycome off anyway).
And if they offer you wax, take it, because it can help.
Also, when you have them taken off, try to wear the retainers as directed, I didn't, and my teeth moved a lot.