Want to learn about brainwaves and how to interpret them? If so, then you’re probably thinking of building a Brain-Computer Interface (BCI)!

Useful Resources

Brain Computer Interfaces (BCI)

Intro to Modern Brain-Computer Interface Design (Video Lectures)
This is a great video lecture series on brain-computer interfacing. It starts very high-level so that the broader concepts are easily understandable by everyone, but many of the modules go into quite some detail on methods.
http://sccn.ucsd.edu/wiki/Introduction_To_Modern_Brain-Computer_Interface_Design

Brain-Computer Interfaces: Principles and Practices

Electroencephalography (EEG)

Rhythms of the Brain (Book)
This is a great book on EEG:
http://www.amazon.com/Rhythms-Brain-Gyorgy-Buzsaki/dp/0199828237

Neurofeedback

Technical Foundations of Neurofeedback
The Neurofeedback Book
Introduction to Quantitative EEG and Neurofeedback
Biofeedback and the Arts: Results of Early Experiments
A book by David Rosenboom about several interesting early art projects using EEG: http://www.amazon.com/Biofeedback-arts-results-early-experiments/dp/088985002X
Event-Related Potentials (ERP)
The Oxford Handbook of Event-Related Potential Components
A good textbook/collection of papers on event-related potentials (basically characteristic waveforms that occur in EEG following some specific stimulus): http://www.amazon.com/Handbook-Event-Related-Potential-Components-Psychology/dp/0199328048