If I'm at home, I can chain it, it is whatever works for you, within reason, obviously, I'd advise against drinking e liquid, but you probably realise that!
Edit: Most vendors are decent sorts, best keep to the uk ones to begin with, so you don't have to wait ages or end up having to pay handling fees to royal mail, etc. Check our discount page too, as it will save money, and most of the people on that are helpful, and active on the forums. I'll give an example: Vape Escape, they are meant to be good, and I am sure half-a-dozen people could give half-a-dozen other examples.