I bought this book a few years back just after I had left college, and even though I do a slightly different workout now, I still use most of the exercises in it. This book was a lifesaver, as I needed it to gain weight (I had starved myself for quite some time until this point), and yet I didn't want to just get up to my normal weight and be all flab (genetics gave me a natural body type of a Hungarian peasant woman. Working out is a must for me, or else!). I wasn't overly sore from working out using this book, and I got the results that I wanted in about 6 weeks.
My chief complaint is the illustration of the squats. I have since learned that Marthe bends her knees much too far in the photo; *never* bend your knees further than 90 degrees. I too, also hope that a future edition will be spiral bound so that novice exercisers can hold the book open while they work out.
The nutritional advice is good for the weeks that you're dieting, although I have found that you may have to slightly increase the amount of protein you take in daily after your reach your goal weight to keep your muscular body looking well, muscular.