ive been asked this question several times. what ive come to tell people is this;
dont worry so much about your first ecig, think more in terms of your second or third. i say this because like most vapers after your first rig you may find something 'bigger,better,more' and upgrade. save yourself some money and get the best,most versatile set up you can afford to spend on something you may or may not continue. theres an old saying...." dont gamble anything you cant afford to lose"
stay clear of the gas station products as many of them are over priced and inferior in quality resulting in a less than quality experience.
try no to put too much faith in the reviews that say how many puffs one is good for or how long a battery charge will last. its all subjective. the harder you hit at it the quicker it will go.i can kill a 3000 mAh battery in about 8-9 hours.( hence why i have 4). more moderate use will get you longer life.
my first set up was a 'volt' kit from smokless image. then i upgraded to their X2 battery. then i upgraded to clearomizers.then i moved up to an 1100mAh eGo unit and then a bigger clearomizer.then to an eGO twist with a dual coil tank system.now im using a siegeli zmax with a rebuildable atomizer.
i still use the eGos,but theres a lot of money i could have saved if i had just started out with an eGo-t kit like they have at the store or online retailers. you get 2 eGos(depending on the kit) 2 or 3 clearomizers the charger and a carrying case for around 50$ +/-. all you need to add is your juice of choice.
and thats a whole other discussion. you can get just about any flavor you want. fruit flavors,liquor flavors,tobacco flavors,desert flavors even candy and pastry flavors.
bottom line is: prepare to be dazed. the selection is almost endless.