The Coaching Manual: The Definitive Guide to the Process, Principles and Skills of Personal Coaching 

by Julie Starr

Despite the repetition of some lame cliches that seem to thrive in self development books such as this (for the last time: we DON'T only use 10% of our brain capacity, because no one really knows what the full potential of our brain is, neither is there a standard scientific measure for this 'potential') this is a mighty fine book and probably the best possible introduction to coaching. The author speaks with authority and experience and gives countless practical examples in an easy to understand and empowering language. Highly recommended to anyone interested in this topic.

The best reflective textbook on coaching individuals I have come across. The book has a very solid basis in both theory and practice and will benefit anyone with a sincere wish to improve his or her coaching practice. For me, the book uncovered a number of not so productive aspects of my own coaching which did not make it easy or fun to read but essentially a reflective learning experience.

Good book about coaching, worth reading. Fairly basic overview although still deeper than most books on coaching out there.

You will need to read more than this book if you want to be a life coach.