Highs: Easy to understand, great photography that clearly spells out different techniques. This would be a great series for anyone wanting to move their skill level to the next rung.
Lows: No real drawbacks, some of the techniques would be a bit too much for beginners. Maybe would have been more user friendly if each of the techniques had been rated for beginner, intermediate, advanced, etc.
Verdict: A concise two volume set that covers virtually all aspects of building from choosing a kit to the final level of weathering with both text and photography. Wherever your skills happen to fall on the spectrum Adam's work can help to the next level.