i think i am confused....i just watched the video and it does show how to join so are you asking about what to do AFTER you join? if that is it, it depends on what your pattern says. if it says to knit for x number of rounds or inches just do that. doing just knit stitches in the round will create stockinette stitch. if you put your work down remember when you come back that your working yarn will be coming from the right.