Check out (non-aff link) http://www.amazon.com/Software-Estimation-Demystifying-Practices-Microsoft/dp/0735605351 http://www.amazon.com/Software-Estimation-Demy

Check out (non-aff link) http://www.amazon.com/Software-Estimation-Demystifying-Practices-Microsoft/dp/0735605351 http://www.amazon.com/Software-Estimation-Demystifying-Pract... It's a good summary on a several techniques, how to apply them, and how to pick how in depth of a one to do, as well as how to talk with people who try to negotiate with them.