This is the first essential skill for online poker, once you have mastered hand rankings, you can automatically remember these and focus on improving other areas of your game in real-time without distraction. Perhaps one of the trickiest elements of the game for the beginner is remembering the combinations of cards that make up winning hands, and also how these hands rank against each other. For the uninitiated, poker can be a high-pressure (and highly complicated) game, with numerous possible hands and lots of rules to keep in mind.