This link takes you to an article from NeuroRegulation, the journal from International Society for Neurofeedback Research. It is useful reading for anyone wanting to understand the different approaches to neurofeedback currently in use. Brainwise offers QEEG guided neurofeedback
This link takes you to the website for EEG Education and Training and the providers of EEger, some of the software used at Brainwise. There is good information about many aspects of neurofeedback.
This link takes you to a website has information about many topics related to brain training, brain stimulation, brain analysis and neuroscience in general.
An interesting TED podcast about Neurofeedback