Great question! Here are the basics: The Lean Startup by Eric Reis http://www.amazon.com/The-Lean-Startup-Entrepreneurs-Continuous/dp/0307887898 Running Lean by Ash Maurya http://www.amazon.com/Running-Lean-Iterate-Works-Series/dp/1449305172/ref=pd_sim_b_4?ie=UTF8&refRID=03VER05GWM6QV80D49ZH *e...