In 2003 I taught myself how to make chainmail. There are a lot of good websites that teach the basics including winding your own rings, ring size and weave style. There are also a few places that sell pre-cut rings in any size, color and metal type you care for. Chainmail is very simple to do as long as you have pattern recognition skills and some basic tools. Below are two coifs I've done so far, made of galvanized steel as that's the easiest type of wire to find in stores. Wire gauges are 20 on the small coif and 18 on the large coif.