If you want to do some amount of walking in Greece, you should not pass this book! Well written, and with some excellent pictures, it covers all the neccessary practicalities as well as describing in detail a lot of good hikes, both for those that like long treks and those who would like to enjoy a pleasant day out. The descriptions of the walks are nice reading and the directions found are pretty clear, although the maps are rather sketchy. So you may be better off with additional maps (preferrably walking maps), if good ones can be found. Other updated information should also be obtained before you take off, since a lot of road building and other changes of conditions are steadily destroying many old trails. You may find some keen walkers on the net that have published some guidance on walking in Greece. A nice treat is that the book, in addition to all the most relevant mountain areas on the mainland, also covers some Aegean islands that may be more or less unknown to the general public. It covers "classic" walking islands like Crete and Samos, but also unknown gems like Nissiros and Tilos.