Hello! Reading crochet patterns takes a lot of patience and concentration. It's even difficult for those of us who only speak English!
In this part of the baby blanket pattern, everything inside the brackets "[ ]" will be done into the ring. Everything in the parentheses "( )" will be worked 3 times.
So, you will chain 3, do 3 double crochets in the ring, then you will keep working in the ring, doing 2 chains, 4 DCs, 2 chains, 4 DCs, 2 chains, 4 DCs. Then you will do 2 more chains, and connect it to the top of the 3 chains you started with, by working a slip stitch.