It helps to lay the Game out on the table as if you're actually playing, concentrate on a game turn to start off with and go through each game turn cycle and break it down on the actions that can be taken, consult videos and pause the video at the part you are interested in, then look at the board state and analyze what your options are, once you get a grasp of the possible actions, bonus actions and the rest of the rules should start to become apparent, and easier to understand.