The sheer scale of CMJ can be bewildering. It’s not cheap, either: a badge, which gets you into the official shows (you’ll have to wait in line like everybody else for the unofficial parties all over the city), costs $495, or $295 for students. Here are a few suggestions to help you plan your week, whether you want to see as many obscure bands as possible or just want to do some schmoozing. A full schedule of bands is at cmj2010.com , but beware: it’s a long, long list.