As advertised this book has "AFV Plans" and not much else -- but this is its strength. It is a straight forward book of line drawings of German armored vechicles from the 1930s into the early years of the war. It has the well known and the obscure; tanks, armored cars, self-propelled guns, etc. Also of note is that all are drawn to scale (either 1:35 or 1:48) and the book includes a chart for how much to reduce or enlarge the drawings for other scales.
This is a niche book for the specialist. There is very little in the way of explanation for the vechicles in the book. In fact, most of the drawn vechicles don't have any kind of written explanation or history; and the book doesn't list the technical specs. You'll need other books on German armored vehicles to flesh out the information presented here.
Why do I recommend the book? It is probably the most complete book available on the many and varied armored vehicles used by the Germans in the early part of the war especially for the price. Many times when I'm reading WWII histories, or playing WWII wargames, I find references to various armored vehicles and I was looking for a simple to use, yet complete reference, so I could visualize what I was reading about. The vast majority of books out there address the famous and common vehicles (Panther, Tiger, PZIII, PZIV, etc) but this book has drawings of the more obscure to include French tanks pressed into German service and others.