The game is a turn based system. The first stage of learning is to know what this happens in these turns. The rules, your game play are all tied to it. The real question is the level of with which you choose to learn it.
Simply playing will get you started on the major phases. But for the more detailed steps wWork with only what you need to remember for now. Avoid worrying about chapters or situations that you know you won’t be getting to for a while yet.
If you are just mastering infantry, stick to only chapter A steps. Just add extra, as you progress throughout your learning of the game.
If you want to lift your game, ensure you don’t miss the basics and increase the speed in which you play the game then learning the ASOP definately helps.