The best deal in glass education may very well be A Resource on Glass from the Corning Museum of Glass (CMOG). Described as an overview of glass art, history, science, literature, social studies and technology, our friends at CMOG have packed an incredible amount of information into this 103 page volume.
The best part? It is free.
You can choose to browse it online or download the entire book in PDF format. Corning also grants you permission to copy, rearrange and distribute the material so long as you attribute Corning and use it for non-profit educational purposes.