I would imagine that yout BB/hr is going to start off very high in small games, but as you move up, it will drop off, but the actually money should increase. I wouldn't say there is a set target, because you should be trying to win an infinite amount every time you play, but as stakes increase, you shouldn't get caught up if your only winning 2 or 1 an hour, 1 or 2 big bets an hour in a 10/20 game is more than what most people make at their full time jobs.
I always get confused also when i see the bb or BB because im not sure which one it is. when you play limit the bet on the turn and river is twice as much as it is preflop and on the flop. this is what the Big Bet/ 100 is. Big Blinds/ 100 is the larger blind you put in preflop. this will always be half of the Big Bets/ 100. it doesnt matter which one you use but to not get confused you should pick one and stick with it.
bb/100 is big blind/100 and BB/100 is big bets/100.as far as i know bb/100 it is big bets /100, and in no limit holdem that big bet stands for 2x big blind.