I think batteries usually arrive almost fully charged.
Cantabile, you could try giving it a good blow through with a tissue underneath.
Crackling is good, it's the liquid vapourising off the coil - unless it's so fierce it's squirting liquid into your mouth.
I've decided I don't really like fruit flavours. I've tried a good range now from several different manufacturers, including one rather posh one, and they all just taste like weak sugar-free squash to me.
My elderly cat seems to be hooked on vaping. For the last few nights, as soon as I've sat down on the sofa and started vaping she's come and sat on me with her face an inch from mine, perfectly happy with her head in a big cloud 
Dizzy, Joose Juice BOGOF on 30ml seems to be a permanent offer.