Dental floss is fine too (unwaxed), I just like the two tone Braided serving string, from BCY, for looks and gripping qualities while you are tieing it. It (for my way) is a simple series of overhand knots on all four "sides" of the string and I usually go around about twice (some folks do more, some less. Then you can burn the ends (if your hands are steady - carefully) to secure the last knots, or, as I have started doing lately, use super glue. After it dries you can still usually thread (screw) the nock points up or down for minor adjustment. I'm not sure but what there is also a "How To" thread on it in the archives, come to think of it. Go to "forum home" (click at top of page), and scroll down for the "How To" forum - or something close to that - ha-ha - it's a memory thing.