This book would be OK for a beginner who is just learning how to solve the puzzles. But the book is really more of a Sudoku puzzle book than a "how-to". Also it doesn't cover advanced techniques. An internet search will serve you better than getting this book.
Judy N. (celticbookworm) reviewed How to Solve Sudoku : A Step-by-Step Guide (52 Brilliant Ideas) on + 12 more book reviews
Very good reference book