I have noticed a number of abbreviations that are used here.   I would like to know what they stand for.

There's an FAQ.   Search this board for the phrase "FAQ" and you should be able to find it.

The moderator posted a list of defs, acronyms, abbreviations, and terms on May 25.  Actually two posts with half the alphabet in each.  Very informative.  I still refer to it every now and then.  Print it out for easy reference.