A co-worker started vaping, and I asked him about it.
FTR I was a 1/2 PAD smoker and fighting the craving on a daily (daily my ..., hourly) basis. I've smoked on & off for 30 years, the off periods ranged from 8 years to 6months. I tried patches, gum, Zyban and Chantix (oh, stay away from that) and while my smoking would stop, the cravings didn't... ever.
My co-worker didn't know that much about vaping, just that he got his in some store and likes the flavors. I started researching (OMG there is so much info out there). Since I wasn't sure it would fly for me, I got a cig-alike starter kit from Apollo. I went with them because I like the form factor, they had reasonable reviews and they're local. That was December of 2012. I have to admit I had 6 analogs during the first 6 weeks or so, but none since.
It took a while for me to find the right nic level but since then, I've been a happy vaper.