ok, so you have a cartridge + atomizer setup. Sounds like you may have overfilled the cart (cart = cartridge). When they're new, the atomizers come from the factory with a nasty tasting packing fluid... those "in the know" blow this out first. No biggie... just don't inhale the first 6 or 8 draws, ok? Draw it into your mouth and then just blow it out. It won't hurt you, but it tastes really gross....
If you're hearing a "gurgling" kind of sound, you've got too much juice in the atomizer. Unscrew it, put a paper towel over the end that the cartridge goes into, put your lips on the threaded end, and blow hard. Then put it all back together and try again.
Don't worry about getting "a mouthful".... lol.... we all did at first. Tastes rough and gives you indigestion (and maybe hiccups). Keep a BIG glass of water nearby when you're first starting out.