The box contains 32 laminated reference cards on flowering shrubs and 8 cards on fruit trees and bushes, covering just about everything I have in my garden. Each card has general care and pruning instructions and clear illustrations. It also includes a neck strap to attach the cards to for ready reference, or alternatively a strap for (I presume) hanging them on a nearby twig while pruning. An accompanying booklet contains handy calendars, tables and other general information on pruning and pruning tools.
I don't know about the rest of you gardeners, but pruning has always intimidated me. Armed with these clear and explicit instructions I will now face my trees and bushes with more confidence - although my septuagenarian neighbors in the garden colony will probably be amused.
The set's in German and geared towards what grows in a typical German garden, and I recommend it. I'd love to hear any tips for other easy reference books on pruning.