Cash is the easiest way to lose a lot of money very quickly in poker. I've seen plenty of players lose four or five buy-ins in 30 mins or less.
So, what advice would I give?
- Make sure you're playing at the right level for you. If you're completely new to poker, don't play cash. I would recommend Sit and Go's or micro MTT's.
- Make sure you're properly bankrolled for cash game, I would suggest somewhere between 100 to 150 buy-ins. That means if you're playing $0.01/$0.02, you need $200-$300. A lot of people, especially those that are new to the game, think "oh, I've got $50, I can buy in to a $0.05/$0.10 game" and their entire bankroll gets blown apart in no time.
- Play a little tighter than you would normally for the first few orbits. Observe the other players at your table and get a feel for how they play. Do they splash around in every pot? Are they super tight and you can push them around? Do they always try to steal your blinds? How often do they 3-bet, or fold to a 3-bet.