I am not an expert at anything but knowing how to find answers. "The Art of Machine Piecing" by Sally Collins is one of the best references I have ever come across. I am a bookaholic and most of my quilt books strongly suggest you sew a test sample like what madquilter suggests, and PaperPrincess sent you a link to. Seams Sew Precise is a small template with seams marked all the way from scant 1/4" up to 1" with small holes to line up the needle for placing a stick'em guide on the needle plate. I like to use it and Bonnie Hunter's credit card set-up to make a guide that I tape to the machine. I wish you success and joy with your stitching journey.