Ideally, booking is done via email. Send us your website link, which contains both music, and a press photo. I gave you CD almost two months ago, and have never been called back. If so, we almost never call back - you need to call us. Internet promotion is key also - get a website, and get an email list started, you'll be surprised at just how effective this can be.
Every band is booked on an individual basis.
If 3 people come to see your band, expect to get paid accordingly. If your band plays Rap Core, Nu-Metal, or Funk Metal please look at option 1.