Hello, I quit smoking using Mistic E cigs sold at Wal Mart. This is a good plan given that you know you wont be left high and dry, just go to Wal Mart. The initial kit costs $30 and you will get two batteries, charger, and 3 pre-filled carts. I vape traditional tobacco, and theirs isnt too bad. You can also buy refill carts 5 for $15. Once you have this set up, all you need to do now is buy liquid to refill the carts. The carts are quite resilient. I still have mine (13 of them), and every one of them still works. You can boil them to clean out strong residue, and they are almost good as new. The only draw back is that they are an odd thread, and will not be useful on other devices when you move on. 510 batteries are best in the long run, as most devices are intended for 510 threads. You can buy batteries from LittleShopof Vapors for as low as $6. Get LR Boge carts, and throw together your own kit.
As for juices, I would recommend KVS's OMFG or Mad Hatter Smooth. Most everyone that was a major smoker likes any 555, or RY$ as well. My favorite liquids are from Alien Vision E-juice, Bobas Bounty, and Gorilla juice, but these are 100% VG (THICK), and are not ideal for cartomizers. They do work if you have the patience to fill them slowly, and are willing to gunk up your carts. These days I use ego batteries with tanks, or clearomizers. Recently Ego introduced the "Twist which is a variable voltage battery (3.7-4.8), for approx. $25. This is a must have in your next step to vaping.