Could someone give me the plain English version of what it is EXACTLY that we are "mining" for ?
I understand we are processing " transactions" but what is it that we find that " solves " a block and finishes it. ?

That is the part of this I dont understand.

People talk about the  " height " of the blockchain, what the hell is that supposed to mean.

I've watch Antonopolis or what ever his name is and he just throws out all these fancy terms that most people dont understand but they
all sit there and nod as he babbles on.

I would like to know what we are looking for ?

Bob