Join the chain to the base of the first ring, tie it off, cut the thread (sew in the ends, if you want)

Reload and start row 2

(There is a technique called "split chains" or sometimes also called "climbing out of the row" which allows you to continue patterns like this without cutting and starting again but if you're new to tatting it's easier just to tie off and start anew. I've been tatting for over 20 years and I still tie off far more often than I climb out)