I have a Singer 7470 which is a fairly basic machine. It was a gift when I retired 6 years ago. I took a basic quilting class which happened to be a wonderful group of quilters and I've been repeating the class ever since. My basic Singer machine was enough for me to learn to quilt. That includes piecing and quilting, including free motion quilting. You can probably do it all on your current machine. There are Craftsy classes on quilting, classes in Adult Ed, classes at most of the local quilt shops (including JoAnn's). Give it a try before you even bother investing in a new machine. The basic features should be needle down when you stop, walking foot for quilting. That's about it. Straight stitching is pretty much all you need for piecing.