Sorry everyone, searched around a bit - and still can't find it. I hear and read all this stuff about BB (Big Bets.)

What is that equal to?

Say I'm playing 0.02/0.04 Limit. What would a BB be = to?

And what is a good winrate - as in how many BBs per hour?

I'm sure this has been answered a ton before - maybe I just suck at searching.

Thankyou!