Here are a few links to other sites with helpful recording information:

Wikipedia's Microphone Article ~ This is a good introduction covering the different types and the evolution of microphones.

Microphone-Data.com ~ After you log in, you have the ability to search the specifications on just about any microphone on the market!

Coutant.org ~ This site has a large collection of sound bytes for vintage and contemporary microphones. You can actually get a feel for each mic's distinct sound.

Sweetwater's Recording Videos ~ One of the biggest retailers on the net. This link will take you to their videos on microphone placement.

SoundOnSound.com ~ A wealth of articles on their site, their subjects cover just about everything.