You very carefully wiggle off the plastic while the clearomizer is attached - do when it is empty, otherwise all the ejuice will come out. Then you carefully unscrew it from the battery. Rinse it, pat dry with a paper towel, let dry, preferably overnight. I suppose you could leave the top stoppers in, but I took them out and ran water thru the plastic tube and left it to dry overnight. Then I put the main element back on the battery and did a dry burn (dry burn = no ejuice in there). Only hold the button down 1 second or two. Stop, do the same thing until no smoke comes out and the top wick part is not burnt looking anymore, and instead is white. Then insert it back into the tube, and put the rubber stopper back in on top with it lined up with the atomizer. Add your ejuice, and put the other stopper back in (or not). Shake, let sit to soak up the juice, and vape!