You thread the beads you are using onto the wool BEFORE you start . You need to make sure the wool will go through the bead easy. I am sure there is a web-site to show how but I expect someone on here will know as it is not something I can explain without getting you AND me in a muddle!!!! I could SHOW you but not tell you
HI again...I just went to google and typed in knitting with beads and there are 1000s of threads so TAKE YOUR PICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
About your beads threaded onto wool. There is a good selection of seed beads (different sizes and colours)on this link which would be good for threading: