One of the best written on the subject.
One of the earlier (1978) offerings in neo-Pagan magick, focusing on ethical, responsible magick and spellcasting.
I read quite a bit, and I have found this to be one of the best books I have ever read in terms of new ideas and content. I have always been interested in the positive side of the Occult and this book gave me a great perspective on life and how my intentions and attitude matter. I feel like it cleared up some long standing questions I have had. In a sense I wish I had found it much sooner in my life, I wish it had been the first book about magic I had ever read. It was a little hard to find but so worth it.