Steve Blank's 4 Steps to the Epiphany is a must read for all developers and entrepreneurs.  Lots of great info about creating a marketing plan that fits your product and your customers.  <a href="http://www.amazon.com/Four-Steps-Epiphany-Steven-Blank/dp/0976470705" rel="nofollow">http://www.amazon.com/Four-Steps-Epiphany-Steven-Blank/dp/09...</a>