Ok patterns:
The granny square pattery is in Leisure Art's "A Year of Afghans" Book 5 (#108211). The inspiration pattern for the ripple is in Leisure Art's "Afghans for All Seasons" Book 3 (#108217) and modified with info from Leisure Art's "Beginners Guide: Ripple Afghans to Crochet" (#75001).
The brilliant thing about granny squares is you don't have to have perfect or even stitches. The critical element is the weight of the yarn. If you can keep that even, everything matches up ok. Even if the sizes are a bit off, all the squares have the same number of stitches around it so it is a minor matter to stretch things a bit to make it all match up.
Methinks someone
Thanks for the book tips! Writing 'em down...I can always use a few more pattern books! I really only have one right now - how sad is that? It's this one, which has a lot of nice stuff, but a good bit of it is intimidating to me. And the ripple afghan I've made twice is just from on-line...though really, so long as you have the basic formula down, I guess a pattern isn't really needed for single crochet type ripples.