We bought this on vacation for my five year old daughter, and it turned out to be the perfect gift. The pictures are clear--not just diagrams with arrows, but pictures of the hands, showing every little step. The string is included--an important point, since they fuse the ends of the string rather than tying them, making it much easier for little hands. Jesse was better at learning by doing than reading the diagrams, but she was able to use them to figure out what she was doing wrong once she had it more or less right.
The book contains five string patterns: Cup and Saucer, Eiffel Tower, Witch's Broom, Cat's Cradle, and Jacob's Ladder; though in fact Cup and Saucer is a stage on the way to Eiffel Tower. We found that Jesse could do Cup and Saucer and Witch's Broom just fine, though Eiffel Tower was a little trickier. Cat's Cradle was doable with some coaching--made a bit harder by the fact that it's a two person figure. Jacob's Ladder, however, is much more complicated, and will take an adult quite a few minutes to master.
Most of us, myself included, have done some string figures as children, usually Cat's Cradle, and I have to say I got as much fun out of this as Jesse. But Jesse had fun too--the string is brightly coloured and the string figures are good, strong simple shapes. It was days before she stopped showing off her "Cup and Saucer" to us!