Clark's excellent "Ignition" goes into all this in detail, a quick google will get you a PDF. A must read, a basic grasp of maths and chemistry is handy but not vital. There are quite a few amusing moments too.
Plenty epic fail on YouNyancat. Rocketry fails provides the best Guy Fawkes fireworks!
Explosion - due to a tank of HTP and one rat.
Biting the hand that feeds IT
