And you'll be in different situations that you'll apply and learn as you continue to play the game. There will be scenarios where you will understand what others are talking about like bluffing or simply folding.
The experience of yours will speak to you on how you will have to get on with those opponents on the table that are unpredictable with their moves.
Most opponents in online poker are unpredictable. You have to feel them out by playing with them to know that they'll fold fast if you're aggressive or not. Unfortunately at low stake tables people change so often that before you get a hold of who's who they leave and you have to start from scratch. Only tournaments or high stake games offer somewhat stable tables but you're going to play against pros and possibly duos that play together against you. Poker is tricky.
Because when playing poker in the company of friends with small stakes, it's just a pleasant pastime. But when the stakes are high and the game is already at the level of professionals, this is a completely different matter. Psychology, a strong character are important here, it is important to hide emotions and other tricks. Of course the plebs also play poker. But I would say that this is not real poker.
In order to understand this, you can simply watch the next broadcast of a poker tournament with the professionals of this game.