Hi, I’m a really really new knitter. I was just reading a pattern for beginners and I’m looking at a pattern for a baby earflap hat. It is calling for a circular size 10 needle. Ok I know what that is and have been using it to make caps for the capital. My question is that after casting on my 50 stitches the pattern says to place a marker and join. I don’t know how to join. Does this mean my hat will not have a seam, because I really don’t want a seam. Can anyone give me direction. I would really appreciate it. Remember, really a beginner.