This book explains what our mind actually is and how it works. (not the brain) It describes different functions & states of mind, explaining how and why we need to eliminate some factors of our mind and cultivate others. A little technical at times but a "must have" for those wishing to understand more.
All his books are written to make understanding easier and with concentration and effort the benefits of doing so are huge. How to Understand the Mind is no exception. Very good and a must if you really do want to understand
Geshe Kelsang Gyatso starts by explaining what is our mind and then begins to methodically look in detail at all of its component parts. He describes very clearly what each part does (for example, intention, mindfulness, concentration and wisdom). I haven't finished this book, but already I can see how I can apply what I have already learned so far to help me improve my positive minds and reduce my delusions. It isn't a light read, but it is presented very clearly and is immensely practical for any sincere Dharma student or meditator.