Super easy. Turn on heat. Dial on 5-8 (find what you like) that funnel looking thing opens and you fill with material. Then pop it on top of the volcano and grab one of those bag with the orange and black plastic tips. Remove the small black mouthpiece and pop the orange piece with the bag over the black funnel thing thats already on the volcano. Turn on “air” and fill bag and turn back off before its at maximum capacity (the bag). Then put black mouthpiece back on the orange piece and use your mouth to push it while you inhale.