This is really easy to do, and can be extremely beneficial in the long run.

You could try joining in conversations and micro-blogging your life on http://www.twitter.com

Or, even easier, join or create a group on facebook (http://www.facebook.com) and see if you can keep a conversation going.

You could even try it from a professional point of view, with sites like http://www.linkedin.com, where you can answer other people's questions and gain respect amongst your peers.