Book excerpt: If you're in a band, you need the Internet. Whether it's building a Web site to showcase your music, downloading free drum loops from online sample libraries or just getting into huge sweary fights with complete strangers, the Net is the best thing that's happened to music since Phil Collins stopped touring. everything from how to build a Web site (find a geek and give him beer) to practical advice on making money and staying out of trouble. Detailed advice about what works and what doesn't features, together with some sneaky tips to help you along the way