I have been bitten by the ruler bug and after 2 years am still loving it. My LQS has several ruler classes for beginners and also a Ruler of the Month class. In the ruler of the month class we used the Westalee starter set (ruler foot and 12" arc ruler) and the 6 piece sampler set and Janet Collins Ruler Design Book to make a 60x40 whole cloth quilt. We ate now starting a QAYG by Angela Attwood using the same ruler sets and working on smaller blocks. I would suggest you watch videos on Youtube from Westalee Design and Sew Steady to see if it is something you think you might like. There are so many rulers and it does get expensive if you decide you like it. I am working on a quilt currently using the apple core template and I have another top that I want to do baptist fan with the circle template. As others have stated you will need to purchase a ruler foot for your machine and I would recommend you make sure it is specific for your machine; my Pfaff Select 3 uses a short shank foot but my Pfaff Performance 5 uses a medium shank foot and they are not interchangeable, they both use short shank rulers, thank goodness. The hardest part of using rulers is learning how coordinate movement of fabric and hands while holding ruler in place; practice, practice and more practice.