It depends on what level you have learned. If the introductory 5 1 kernel is still relatively simple, and you don't want to learn the content of the formal tutorial at the earliest, it is not a problem to find the content of this introductory tutorial directly and learn it for a few days through an experimental board. If it's still as troublesome as ARM, it's ok if it's a naked running program, and if it's used, it's hard to drive these things through the interface. But if you are interested, just like looking for a girlfriend, you can learn without teaching, hehe.