Although I did it backwards (Volume I-III on disc to start) this book is still good for any fitness level (however better for the novice to krav maga). David goes into origins by Imi Lichenfeld, execution of movements, krav maga principles (such as avoiding conflict, walking other side of road, not talking much about your skills etc) but best of all work out drills. You get 12 weeks at the end of the chapters to combine upper-body-combatives into repetition, lower-body combatives into repetition, and combined. The 12 week workouts always end with retzev - an additional 1 minute each week - and some times partner work's included. If you're restricted on the kind of people you want in your life and have been a lone wolf as a result of that he goes into the use of visualization in retzev for maximum effectiveness. Whether it be an enemy imagined or a real person in a dojo you practice with you don't need a practice partner however if you choose to go more virtual and rank by all means there's krav dojos in bigger areas to join if you're blessed with the ability to travel. Retzev, or continuous combative motion, is good for weight loss or for the unknown. Despite techniques that's saved my life from frenemy's in Volume 1-3 I still use the books drills and retzev minutes in my workout planner often from this book. You'll get 15 sets of each technique in each drill. Focus on precision, then speed and power every-time you do it. Then if you do all 12 weeks around your own routine - do them again but with more than the suggested 15 rep drills or in weight vest. If you practice other martial arts retzev allows you to mix them in to keep it interesting. I suggest putting on some good music (I usually do EDM, dance, trance, machine, techno or rave) in quiet places and go to work. This book's kept me out of trouble for years in a high-rise throwing kicks and bows in the living room through every job less, apartment loss, or even mind-loss. The more you practice krav the better off your wellbeing no matter what happens to you. Mr. Kahn makes me letters, trains with the Isreali's, and even trains our soldiers too in the US - so you're learning from the best. This is a good style if you're not into the rules of MMA, want to go straight to maximum effectiveness, and pursue a police, executive protection, or even service career. Just be careful as to not over harm people - although it's easier said than done.