I have the 1st edition of How to Brew and it is truly awful, in fact it is so bad I have never been tempted to buy the 3rd edition. Apart from the fact that all the measurements are in US, it drags the user from Kits to Extract and sort of on toward All Grain in a almost zealot like attitude. There are (were) many inaccuracies and momilies that really had very little basis in actual brewing,
Brew Your Own Real Ale by Graham Wheeler, is a much better book, and Home brewing is even better (and being re published this year or so rumour has it)