Protocol Guide for Neurofeedback Clinicians (very expensive but the best); The Neurofeedback Solution How to Treat Autism, ADHD, Anxiety, Brain Injury, Stroke, PTSD, and More; and Getting Started with Neurofeedback (Norton Professional Books).

Neurofeedback has many different targets. I have used it to become more relaxed and focused. Most of what I learned came from talking to neurofeedback professionals. I strongly suggest you not experiment on yourself, but rather do so under the care of a professional.