3 tips for getting into rock & roll photography
Start small, with a friend's band. This will allow you to experiment more freely and get used to photographing performers while they're playing instruments.
Get used to the pace of a live show. Photographing musicians is akin to shooting sports, there's a pace to a live show which is different than capturing performers in the studio. Capture not just the performance but the interaction with a live audience, all while lights are dimmed and the music is blaring.
Practice, practice, practice. As with any new subject matter, practice shooting studio sessions and live performances in a variety of venues, so you'll be at ease no matter where your next shoot takes you.