Wow!! It was fun.
First, I agree with the recommendation of Karen Karon's book "Chain Maille Jewelry Workshop". The book is my go to guide for everything.
When I originally bought this kit, I was unfamiliar with HP4-1. The instructions were well written and include making it with EPDM rings. The second reason I bought this kit was to get the chance to work with Metal Designz stainless steel. Their stainless is awesome. I didn't fight with it at all, but you can tell it is sturdier than aluminum. I used roughly the same amount of muscle as with copper rings. I didn't need to take the breaks like I usually take when working with other supplier's stainless. Less strain to the body, less slippage of pliers on metal and looks awesome.