Introducing the Game

What is the best way to introduce the basic rules to 10-11 year olds? I have pre-made characters. I have kid-friendly one shots. I plan to run a Session 0 to figure out what to include and what is off limits. But …I am trying to see if they should do some light rules reading first or should I just throw them in the deep end and slowly introduce the rules as we trudge along. My only problem with that is at first DnD seems pretty much “follow the flow charts” but later on there will be exceptions and outliers to the rules. I don’t want to start bad habits before the dice is rolled. Advice, please?