I asked the very same question a couple of months ago for my missus..
Bought her the skycig kit against many peoples advice and for the first couple of day she was impressed. The short life of the battery and the cig bit you screw on sent her straight back to proper cigs. I investigated further.
Now this vaping lark can look BLOODY complicated to an outsider, and it appears to me that most ‘vapers’ seem intent on making it sound complicated too. There are all sorts of weird kits about.
Simple breakdown.. I bought the riva kit (same as the ego kit but cheaper) for about £30.. came with two batteries and two clearomizers (this is a clear tank that you fill with the liquid) that screws onto the battery with a mouth piece attached. Initially ignore all the advice about mixing your own liquids etc and just buy a couple of ready to go liquids. It works out very cheap. 30ml of liquid will cost about £10 and is still half full a month later!!!
As i said.. you’ll see all sorts of stuff about drip tips and cartomizers.. Ignore the lot and just start simple.. you fill the clear thing and just use it til it’s empty then refil it. You can get more adventurous later on if you wish.
As for the results.. she still has a cig in the morning.. one after a meal and maybe one before bed (urgh!!).. but from a serious habit to about 4 a day is a great result..
I thoroughly recomend it.. if you need any advice re purchase, just ask.
Best sites seem to be..
http://www.ukecigstore.com/
http://www.liberty-flights.co.uk/
but as I said.. keep it simple or you’ll put her off.
Edit: a pic of the kit with clearomizer attached to battery (it’s a lot more descreet than it looks).