NMR spectroscopy (Chemistry)
The Basics of NMR 
This is a real good intro to 1H NMR by a professor from Rochester Institute of Technology. It might be a little long for a review but definitely in enough information to get you started in the wonders of NMR.
All you ever wanted to know about Pascal's triangle 
I realize this might be better suited for the Math section but since pascal's triangle has a micro-implementation in NMR spectroscopy I thought it might be somewhat interesting. There is a lot of information on this site about pascal's triangle.
Continuous Wave NMR spectroscopy 
In these two paragraphs CW-NMR is explained. Even though the instrument is generally not used any more it gives you an idea of where modern day FT-NMR's come from.
