[aytekin]

The Goal by Eliyahu M. Goldratt is pretty good. It is a business fiction book, so although it is not about startups, it applies well to start ups. http://www.amazon.com/Goal-Process-Ongoing-Improvement/dp/08...

The book explains Theory of Constraints(TOC) in a novel. TOC is basically similar to profiling software, but instead of software, you profile a business. Find the bottlenecks in the system and work on them. Improving other things has very low return, and usually just waste of time. Improving bottlenecks improves the throughput of the whole system.

Here are my other recommended business fiction books: http://atank.interlogy.com/blog/?p=15