Here is the book:
http://www.mindystarnsclark.com/house.php
Often ladies will post pictures of their new cleaning solutions, so monthly threads have been in the picture sub-forum of Joyous Housekeeping. A recap is in the beginning of the February thread. The threads get long. If you want an idea of how it works, the February thread is a good place to start.
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I don't think you would have to buy another book. I think broad enough challenges can be made to serve both purposes, and draw in a larger crowd.