Every chart you read is a bit different. I could probably search and find 3 different charts all saying basically the same thing. On the other hand, I think the general idea is correct. Most newer players need to limit their starting hands to the best possible. When you get more experience and knowledge under your belt you can start trying to out play your opponents with trash. Until you figure out how to play the basic starting hands, you need to limit yourself to the ones that offer the best chance of winning. It makes the game really boring, but if you want to extend your bankroll and allow yourself to play longer on fewer deposits follow the basic math rules.