Bruce's Bombs, Explosives, and Ordnance Pages - Quite a few safety tips for pyrotechnics.

Chemistry of Firework Colors - Discusses incandescence and luminescence and provides table of compounds used to produce firework colors. Links to related sites included.

Pyro Purity Test - How much of a pyro are you, take this test to find out.

Classifications of fireworks - Classification codes and what they mean.