You don't need to practice hiding if you are not comfortable with it. On the other hand, you also don't need to practice knowing what's their card per round. Focus on your own way to come out a winner every round. In every round, you will encounter lots of strategies that your opponent can use against you, take note of those and use them on your own if you think that's applicable.

It's better to play poker online, against real players, than offline playing against a programmed opponent. You can maximize your skills if you are up against a real human and the pressure is there if you play online whereas offline, you will just feel comfortable and relaxed.