Okay, you launched the game actually the launcher came up and you clicked start. Before you do anyhing, acknowledge that if you're gonna be able to play this game, like being that much intelligent nobody or you yourself can take you from this game anymore you'll gonna spend thousands if not hundreds of hours into this game.

If you want to have fun don't start with ther country you're from. Rather play with recommended countries which are listed down below in the starting menu.

If you know some little things about the game like mission trees then you should follow those until you reach some level of profeesionalism in the game. Don't quit when you lose a war play on ironman to get better in the game and never ever forget that it's just a game and feel yourself like a real ruler with the music EU4 offers and the deatils of the game which is a lot of reading than playing. Go with the beauty of the game its not about beating the game its about understanding it. If you do all these things congrats! Now you should not be suffering.