With a little understanding of your Java Edition files/folders (or at least access to the official Minecraft launcher client), installing a tutorial world should be a pretty simple task. By simply ...

Minecraft is a pretty customizable game, even in vanilla format. There are plenty of ways to go even further with the customization, though. Data packs can be used to ...

NOTE: Yes, I require you to have quite a bit of technical knowledge when it comes to Java and other things such as that. As well as folder locations, unzipping, how jars/modding works in Minecraft, ...