Kristy's Great Idea, by Anne M. Martin

In the book, Kristy's Great Idea, Kristy  thinks about starting a babysitting club.  Then Kristy asks all her friends if they want to do it and they say yes.  So they start a babysitting club and it turns out to be a big hit.

I liked this book because it was interesting.

Two other books I would recommend are: Drama AND Sisters.