Hi!
I'm new to e-cigarettes too.
I started at the start of the year and it's been a hard transiton after smoking regular cigarettes for years.
There are numerous review site out there and most have been very helpful in introducing the different brands out there.
I found this review helpful: (spammy link to affiliate site removed)
I think it's basically trial and error plus word of mouth!
I'm glad there's forums out there that can help guide us!