This is an excellent book. It's out of print, but it's worth buying a used copy. I read "Wishcraft" years ago, but really without a group it's not very useful, no matter how inspiring and smart it is when you first read it. "Teamworks" is about forming those groups, and it's very detailed. Personally I think it should be included with "Wishcraft" as a (long!) appendix.
There is a sad postscript, however. In "Teamworks" Barbara Sher declares that she's not interested in franchising, and exuberantly shares all kinds of information, not just for starting Success Teams but even for offering potentially paid seminars to get the teams started out. That was in the '80s. Well, if you check her website, you will find that this is no longer the case--now, at least in some form, she does engage in franchising, and the extremely (overly?) substantial package for leading seminars costs around $600. In some areas where a seminar leader is already located, they will not sell you the package. What I find really sad is that presumably people are still able to start their own free success teams, but this seems not to be encouraged, and starters are apparently obligated to state that they aren't licensed by Barbara Sher--but this isn't even clearly stated or encouraged. When you're in the middle of thinking of reaching out to strangers to work on a goal you're very stuck on and very vulnerable about, it's not great to read something so discouraging about actually doing what the author was convincing you to do... all because of money and liability.
If you're like me and whatever you read affects your moods more than it should, read the disappointing stuff on her website first, and then read the exciting and encouraging book-not the other way around!