Funding a start-up company

I've been doing a lot of research into running a start-up recently, and a name that always pops up is Paul Graham. He runs the Y Combinator, an early-stage venture funding company, and has written an extremely informative article on funding your start-up. I love the analogy he gives about how the different stages of financing your company works like gears on a bike; you should get just enough funding that enables you to drive your company to the next stage. This makes a lot of sense to me. Inc magazine also had an interview with him which I enjoyed.