For starters, I would recommend the 400mAh 3.7 regulated mini-eGo batteries! Super portable, very similar to the size of a cig (just thicker & heavier, but great way to start). Don't waste money on kits. I bought x2 mini eGos+charger+x2 clearomizers for less than $50. Clearomizers are much better than anything else IMO. Check out Vision/Stardust eGo clearomizer V3 or the mini viv nova tank clearomizer. They are good because they are rebuildable, have long wicks, and top coil (for warm vapor). Try out low resistance for better TH & vapor. Adjust your e-juice nicotine level & PG/VG ratio to find your sweet spot. Only buy 10mL bottle of juice until you find what is right for you. All in all, you should be able to get started for the first month w/ ~$60. Then after that just, $20/month for 30mL of juice and $15 for x2 replacement clearomizers or just buy parts even cheaper.