It really depends on your style. Soda jerk was doing open Mic for a while at summit music hall on Wednesdays I believe. They are a good company to get in with just because they run a big part of the Denver scene (especially if you play any kind of rock). That would be a good first step. Then you need to start networking with other Denver bands that have a similar sound but have a bigger draw than you. That's a good way to make new fans. Then start sucking up to westword, Colorado music buzz, and 93.3. If they hate you, they can make it very hard to play shows in Denver. Hope that helps! You can message me if you want any more help with anything. I have plenty of contact info for various venues around town.