I think you will probably be ok in a day or two, your probably just going thru some normal
adjustment time to vaping. Don't inhale into the throat for a day or two, just the mouth,
and then slowly increase into the throat area. By day 3, it should improve, if not, possibily
other soulutions mentioned should be considered.
As far as juice goes....
It is something that you will have to personally explore to find the right juice and the
right vendor to get it from. Buy from several vendors (they are all different juice tastes)
and buy small bottles for trial. Some you will like, some you love and some you will
probably hate. It is just part of vaping to find the "perfect" juice.
Unfortunately, no one here can tell you what YOU will like. It is something that you
will have to taste and experience as a individual.
Just a little learning curve at first, but keep up the good work, come back here alot and
read, read and read some more. The more you learn, the better your overall vaping
experience will be.
We are behind you every step of the way!