Learning Vim and Vimscript doesn't have to be hard. This is the guide that you're looking for.

journaling system cobbled together with nix, vim, coreutils

Website of Gilles Castel

Learn Vim Progressively
Über leet use vim!

tl;dr: You want to teach yourself vim (the best text editor known to human kind) in the fastest way possible. This is my way of doing it. You start by learning the minimal to survive, then you integrate all the tricks slowly.

Damian Conway's vim setup.

Where I stole the vimmath function

A list of niche Vim features and their time-saving, real-life applications

All things Vim!

:memo: An awesome-ish list of vim for writers. Contribute to phantomdiorama/writingvim development by creating an account on GitHub.

Below are some simple methods for exiting vim. Contribute to hakluke/how-to-exit-vim development by creating an account on GitHub.

Good explanation of augroups, autocommands, and skeleton files

Vim plugin for Matt Might's '3 shell scripts that can improve your writing' 

A tutorial and primer that teaches Vim as language instead of commands

Learning Vim and Vimscript doesn't have to be hard.