So I barely know anything about modding but I've had a very very ambitious dream to create a mod with some of the features I love from this mod (ie. factions, alignment (though not necessarily the same system), set biomes and set map, etc.) though encompassing some completely different made up fantasy world with only really humans (this isn't important, just showing I'm trying not to copy this mod as much as possible).

I basically have two questions:

1. How do I learn to code some of that in very simple terms / are there any tutorials which could help me learn this at least in a roundabout way?

2. What is considered copying? I'm not trying to make this like this mod nor like the Lord of the Rings world Tolkien created, just I love the features of this mod. Would using many of the features from this mod be considered copying the mod? And, if not, is it like "morally" okay for me to use some of the features above for a potential mod? Obviously, if this thing ever came into practice, I'd credit this mod for inspiration for the features.

Feel free to tell me I can't do this because of copyright stuff because that itself is useful information.

I also looked at a 5 year old post (https://lotrminecraftmod.fandom.com/f/p/2727758610301255503) which gave me some of the answers I'm looking for.

A big note is: *I don't want to copy the same features as this mod, but instead learn how to code the features so I can make them a way I see fit.*

Thanks