i like to cut mine at a 45 degree angle right below a node, then i trim off the stems from the node, dip in cloning gel and put it in a ez-cloner. roots will grow from the node, i have a really successful % of clones work this way.
any soil mix and perlite 50\50 in 16 oz cups with holes. cut any way you like, bury a node or not. use any rooting compound or liquid. then water till cups soaked. cover with humidity dome put in low light and around 75 degrees or so.