Up to date SpriteKit Tutorials

Hi!

As a starting point I would recommend to use SpriteKit Documentation (https://developer.apple.com/documentation/SpriteKit)
It contains a lot of examples of how to use SpriteKit in the most efficient way.
If you want to just familiarize yourself with basic SpriteKit project structure I would recommend to create a template SpriteKit project in your Xcode and try to run and debug it.

Answering your last question, I can't exactly say about differences in Swift, but in SpriteKit not too many things have been changed over the last couple of years, so it's pretty much safe to use some older tutorials if you'd like.

Yo, I don't know if you can listen in Portuguese but has a great channel talking about SpriteKit, called Behind Game Lab.
the documentation it is awesome to.
Past few years SpriteKit didn't change almost anything, so go ahed and pick up this tutorials!
And try to understand what's going on, the documentation helps a lot in that. Because once you understand what's going on, it's easy to replicate the concepts.

Thanks for the replies. They are much appreciated. I’ll definitely be taken the advice.