Just practice. Any game can be mastered this way. After reading quite a bit of strategy online I've realized half of it is complete bollocks, and the other half are just incomplete strategies that are usually not optimal.

A complete strategy takes into consideration everything that the player does, and all of the information the players are giving away at the table. A move that might work for one person, might not work for another one. Granted, it might help to look up a few percentages whenever you have a certain question, such as how many times I will complete my flush draw and stuff like that.

This is important because when you start to realize that your opponent will miss the flop with two unpaired cards 66%, or an A, Q, or K will hit the board 50% of the time, you can start to use this information to your advantage.

but like I said, take other peoples "strategies" with a grain of salt.