I read the first few books in this series a long time ago (back when they were first being published) when I was first learning how to piece. It really made me want to learn more, and in fact, I bought the same 'how to' book that the author made her first quilt [wall hanging] from, and I made it--and all these years later finally got it quilted and hung up!
Now I am re-reading them, borrowing them from the library. I have just finished the second one, which I found very good (Round Robin). Good to know about the 'slow' books--now I won't feel guilty if I don't finish them when it's their turn!
I, too, like them because they are 'light' reading, but also interesting. At least the first few are.