I typed in "how to make a yoyo quilt" into the search engine & came up with quite a few links. Here's the first one.
http://quilting.about.com/od/piecing...yoyoquilts.htm
Last year I bought the yoyo makers from Clover and they're fun to use. Most of the yoyo quilts I've seen use a light coloured fabric behind the yoyos but yesterday we saw one with a black background & batiks in the yoyos... it was stunning....