"Casting On" - you mean the notation under your name? that just indicates you are a new member of the Board. After "X" posts, you graduate to ... I forget the next level, probably something to do with ribbing.
As to your stitch question, isn't it defined somewhere in the pattern how to do it? Perhaps near the beginning, after they give the supplies needed and the stitch guage?
ALso, can you post a link to the pattern, even if just a picture of the finished item?