I took this class from Craftsy.com and it was fabulous. It cost about $20, and with it I think there were 5 different block patterns, each with about 3 project variations.
I had never paper pieced before, so I made a block to practice, which I posted earlier, than skipped to a trickier block and made a wall hanging.
The strip piecing methods meant it went very fast, but I did make some mistakes- you have to be very careful when cutting the blocks apart from the strip to take notice to where the fabric will cover. Most of what I did wrong was in the seam allowance though, so it was no big deal.
I love the precision of paper piecing. Peggy Martin recommends removing the paper from the block before assembling, so some of it isn't as precise, but in the whole quilt, I think I only lost 2 points. Pretty impressive :)