I did not take a class when I made my first quilt. I had done some sewing in the past. And I watched "Simply Quilts" all the time. It turned out OK. But I really wanted help with how to sandwich the quilt and then machine quilt. So I took a beginning quitling class. It only covered making the quilt top. I was really disappointed but I did learn many great tips. And it was great to have fun with the ladies. I was totally surprised to hear that many people send their quilts to someone else to do the quilting.
I read several books and just talked to other quilters. I put together everyone's hints and I can now make a quilt from beginning to end.
I take a class once in a while now. I always learn something new.