First off congratulations on your purchase and decision to stop smoking tobacco. You need to buy yourself some eliquid, I started with 30ml bottle 18mg nicotine strength and it worked quite well (alot cheaper and much more vapor than prefilled, lasts longer too). Also you may want to remove the filler in one of the carts and replace it with rolled Lipton Pyramid tea bag it's a great filler(10 times better than the poly fill that's in there), just don't make it too tight (also when removing the original filler make sure you get all the glue out it looks like white-out), another tip long slow drags when your mouth is full inhale, and yes most people do inhale. oops almost forgot I store mine with cartridge end down, led end up in my shirt pocket just so no juice leaks out of the cartridge and floods the atty, but this is just my preference.