Pokertracker question

[Mr. Ratface]

When I first got pokertracker I was in a period where I was learning limit and therefore playing limit. I got accustomed to the BB/100 thing and to my understanding 3bb/100 is good for limit. However, I am finally tracking my no limit stats since I am playing it again and I am not sure what to look for.
Is it measured in terms of BB/100 or is there some other sort of measurement?
What is a good winrate to look for in nl?