As a graduate student in a group dynamics class I found this book very practical and thorough. I like Yalom's interpersonal approach a lot too but I find that this book covers the nuts and bolts of groups really well.
I promptly emailed the company and told them that I ordered the wrong book. I asked them if there was any way for them to stop my order. They never replied and it still too 2 weeks for me to recieve my book. When I received my book there was not receipt or return address.