I am new to the whole blogging world and this site would be extremely helpful to me if I only knew WHAT THE HECK HALF OF YOU ARE TALKING ABOUT! hahaha I feel like an idiot but I have no clue what all these abbreviations are.

o/t
BM (birth mother?)
DH (dear husband?)
FSS
FSD
SD(step daughter?)
PAS
SO (significant other?)
etc...

I know there is a bunch more being used, I'd appreciate some help with this! That way I can get a move on with my own blogging on here hehe.