If you insist on playing live without a bankroll, I recommend you study body language as much as possible. Don't be one of these guys who sinks into his ipod when he's not in a hand, pay close attention to how people are playing, what they're showing down with, and in particular try to read people's posture, mannerisms and that kind of stuff. Everyone has tells, because everyone has unconscious reactions to events going on around them. If you can tell the difference between a conscious reaction and an unconscious reaction then you have a massive edge in live poker.