I agree with you, however he mindful while watching shauns tutorials because he is on an earlier version and what he is doing may look different IDE wise, little tip when you make a script don’t delete what the editor puts in the script already just put the code you want for the script inside the bracketsLike Chamaeleon said, definitely read the manual. It's very helpful and has a lot of information you'll need. I'd also recommend youtuber Shaun Spalding. He has a lot of videos for beginners that are very helpful and explanatory. He kinda walks you through the basics and explains the code in a way that's understandable to newcomers. I'd start with his complete platformer tutorial series. That's how I started.
Shaun's complete platformer: