http://www.quilterscache.com/ is another one that has paper piecing too. it all depends on how you want to do it. if you are wanting just blocks the carol doak site and this one are really good for it. there are also many others. and the best part is these are free. the carol doak site has some that you pay for but there are free patterns too.
I think for me the best instructions was for Carol Doak. if you can go to the library and get a cd of hers with the basics of how to do it then that is best. there are also u-tube videos that are good for helping on it.