This document provides the preface to the revised edition of the book "Brain Train: Studying for Success" by Richard Palmer. In the preface, Palmer discusses some of the changes he has made to the revised edition compared to the original edition published in 1984. He notes that in the original edition he collaborated with a student co-author, but has opted not to do so in the revised edition for practical and philosophical reasons. Palmer also expresses his view that "study skills" are still not being systematically taught in education, using an anecdote about a study skills course he recently taught to illustrate his point.