Carol Doak also has a yahoo group that is wonderful. I am also just learning to paper piece and just recently joined her yahoo group and we just finished a twisting mystery quilt that she just did starting in Sept. It was so much fun and it turned out to be a 44" (I think) sq but could be made bigger by adding more borders. She adds a lot of new blocks when the group reaches so many members and she just added a 7500 member block that looks really cool but I haven't had time to try it yet.
Have fun paper piecing, it is a lot of fun but I agree I hate the mess of taking the paper off the back