Welcome to out wonderful board. No matter what question you have about quilting there is someone here that knows the answer. Also they are always willing to help. Myself, I have a 28mm, a 45mm & a 60mm, but It seems I always use my 45mm. A rotary cutter will sure make your quilting life much easier. (You have to have the cutting mat to use it normally) I have seen those little kits at Wal-mart that a few mentioned. That would make you a good start. I think the cutter in them is a 45mm too so I would pick up some more blades for it too. Just in case. I like to be prepared. Have fun with your projects & post pics when you make things. We would love to see them.