Knitting a Hat

hello im ashley i have not knitted in a couple of years and have seemed to forget how to conect the yarn on circular needles to make a hat. please help

You can - just starting knitting the first CO stitch, swap the first and last sts (so the first one is on the right needle and the last one is on the left), or CO an extra stitch and knit or purl it together with the first stitch.