It is not a one-shot process.
You could set up a tumblr account for your game and start following the heck out of other indie developers. While you’re building up a list of folks that you follow, be constantly posting news and screenshots and links to materials about your upcoming game. (You’ll see that most of the indie devs on tumblr follow-back immediately.)
Once the game is released you have a pretty solid platform to be talking to a large number of people about it. There’s no magic pill that transforms you from an unknown indie-developer into a mega-hit selling Notch. Being a bigger part of the community however will never be a bad idea.
Best of luck to you.