Check out her latest book, it helps with template sets and figuring out how to use them for different patterns. But read a little first to see if it will help. I was skeptical at first on the template idea, but it really does make for accurate piecing and now I love it. I've also figured out that if you don't have acertain set, it doesn't mean you can't do a pattern. Templates in the pattern often have the same shapes as a different set, you will just end up with a different size block.