This reminds me of my grandmother, who never learned to swim because her mother said to stay out of the water if you don't know how to swim. I'm 99% sure the class will teach you everything you need to know about paper piecing, and it's not that hard. Just to be sure, you could ask at the shop whether the instructions will be geared toward someone who already knows how to PP. If so, look for a beginning class, but by all means go for it. Once you understand the concept, it's lots of fun. Some people also like Carol Doak's books, but I learned in a class, so I haven't read her books.