Well if your in the market get yourself an Ego Twist. Its a small, cheap variable voltage that will give you an idea..
If your already hellbent that you wanna vape, Get a Vamo v3 or higher, a decent charger, and some efest 18650 or efest 18350 unprotected battery's. You will also need
juice. You will certainly need 2 batterys, as one will not keep you from smoking. Do NOT
buy your battery's from ebay.
fasttech is a website to get many things for dirt cheap but it will take forever and 8 days to get to your door.