Follow these bankroll guidelines:

• your poker bankroll should be @ least 300 big bets.
• keep your poker bankroll separate from your daily finances
• if you're playing with the rent money, then you my friend are a gamble-holic
• the 10% rule - try not to lose more than 10% of your entire bankroll on a single session.
• no limit bankroll: you should have at least 15x the Maximum Buy-in; to protect you from the large variance in NL hold'em!