While this book's conversational style makes it accessible, I found it to be mainly composed of whimsical, slightly opinionated musings. If a particular tip was useful it seemed to be by chance rather than careful design. Reading it doesn't make you any more prepared for a real life hearing. You won't return to it after reading it once.
New practitioners looking for easy reference, practical guidance would be better advised to invest in the advocacy titles by James Welsh and Noel Shaw, which continue to be relevant although dating from 2003 and 1996 respectively. For a pocket guide of up to date law that you can actually have with you in court, I would suggest Andrew Keogh's Blackstones Magistrates Handbook.