I had a hard time finding a tutorial on how to do this, and found a little bit different way. If you do it this way you don't have to change the directions you twist the yarn in order to keep it from getting all twisted up.
by TyingItAllTogether
by Nidhi's CrochetART
by Birdy Official
by urban graffi slj
by Carolyn Wainscott
by Easy Art
by StylEnrich