If gurgling occurs take the tank off your mod. Wrap it in a paper towel. Sling it 4 or 5 times real hard with the drip tip facing outwards. Excess juice will sling out of the drip tip. Wipe clean and place back on mod. Works every time to clear a flooded tank.
As far as operation I found if you pull to hard you will flood. Hit it to light and you wont get enough juice to the wick and you will get dry hits. You have to let the tank vape for you so to speak is the best way I can put it.
As far as priming the coils...I put 1 drop on each wick hole and about 3 to 4 drops right down the center (I believe its almost better to flood it especially with a new coil. You can always fix a flooded tank but you burn that coil your SOL), assemble coil into base, take a little juice and lube the rubber on the base, fill tank, then assemble the device. Don't tighten to tight but tight enough for it to be seated down on the base. Place tank on your mod. Start low 7 watts several puffs, 8 watts several puffs, 9 watts...you get the picture till you reach your desired wattage. I tend to not push it more than 12 watts on the 1.6 ohm coils. There is a little learning curve but once you get it you will love the tank. Hope this helps! Good Luck!