First of all I hope you wanted an honest opinion
I spent some time reading some of it and there's a fair amount of misinformation there e.g. the Celts don't go to the Summerland - the Summerland is Wiccan. And some of the info on old Gerald Gardner is, well, mixed up. The whole thing's way too Wiccan for me, once they quoted the Wiccan Rede that was me done, lol.
Anyway, I've never heard of this book and I don't think I'd buy it. Other people may think it's great. It all depends on the tradition you follow, really.
My recommendation would be the book by Judika Illes - "The Element Encyclopedia of 5000 Spells". It's got spells for just about everything.
Jenny Crow