Its paid and not FOSS but you can use it without paying but some QOL features are missing. boot.dev . Its full backend course btw. There are 2 git course. Basic and advanced.

It’s not improving it cause apple can use it. It’s improving cause people can use it even after apple is not supporting it or don’t like apple’s OS.

Yes

leader<y> to yank to the system keyboard clipboard

Look into kickstart.nvim . It’s not a distribution but I think it will help you. Also after cloning the repo look up the video by tjdev(he is a maintainer on neovim).Or don’t all config are self explanatory. There is twice the amount of comments than actual code.

I am a little late but look into VimBeGood plugin by Primeagen. If you don’t have basics down. It’s like an old typing game but for learning the basic vim commands.