Help with NBT

Quick question, I have been searching around for ages trying to find some sort of docs or something so I can learn to use NBT data and tags for various things.

If there arent any docs, could you find any tutorials because I cant find any and the one written by notch which I found somewhere requires you to download a test.nbt and bigtest.nbt from the minecraft website but the docs arent there anymore (https://minecraft.net/docs/test.nbt). Also If there arent any docs for that is there a place I could learn about how chunks are loaded (still nbt) and Ive heard a lot about NibbleArrays and also how minecraft regions are saved and loaded (.mca files etc..) and also about .dat files. I would be really grateful for a link or link to a tutorial on this. Thanks ) This is for helping me with a map loading plugin for a server (loading some chunks etc...)

 

So here is a doc about using NBT tags on items.

 

Thanks, but what about loading chuck files, or region files? That only shows example code, no explanation lol

 

@Shadow_tingBRO Have you read this?

 

OhhHhhh thats more like It, Im not going to mark as Solved yet i will do after!

 

@Shadow_tingBRO Sure, you can just ask about anything you don't understand.