do a search here on RIU about cloning and it cant get any easier. But yes usually from the lower branches taken from around the 2nd or 3rd row of branches after the plant has grown for usuallu 3 to 4 weeks.. Cut at a steep angle apply root stimulator then put into rockwool cloning Plugs with the slitz in the side and get a cheap cloneing dome from lowes. good luck mateThe stems at the bottom of the plant.
Should be pretty easy to find more info on this topic.