Start small.<p>Build something you`re passionate about, and go through all the phases: market research &#62; product outline &#62; dev/design &#62; test &#62; release &#62; marketing<p>See what works, what doesn`t and most important have fun building it.<p>Small projects like:
<a href="http://umbrellatoday.com/" rel="nofollow">http://umbrellatoday.com/</a> or <a href="http://bouldr.net" rel="nofollow">http://bouldr.net</a> 
are the best thing to start off with, gain experience and network the hell out the local tech/biz community.<p>Good luck and have fun!