There is a lot of different things to keep track on in a game as complex as Kingdom Hearts 3, especially for those who have not played the other games in the franchise. Fortunately for us there are lots of tutorials that will pop us as you discover something new to do in the game, but even with these you might end up getting confused.
When this happens, it is great to know how to replay the tutorials in Kingdom Hearts 3. All tutorials that you have unlocked will be available in an own menu found under the "Game Help" menu from the pause menu. You will find the tutorial spread out in this menu, separated into smaller categories such as "Combat" or "Movement". This makes it easy to find the tutorial you are looking for.
You won't need to do anything to get the tutorials in this menu, and they will automatically show up there after you have gotten them for the first time in the game.