Welcome to All Things Plants, Carol !
The abbreviations can definitely get confusing -- it seems the people that do a lot of texting (that wouldn't be me, for sure) have a LOT of them...
a couple that took me quite a while to figure out were YMMV (explained by Woofie, above), and WRT ("with regard to").
Never be afraid to ask -- chances are good that if you don't know what something is, someone else that's reading it doesn't either!
