Learn Vimscript the Hard Way

> Learn Vimscript the Hard Way is a book for users of the Vim editor who want to learn how to customize Vim. > > It is not a guide to using Vim. Before reading this book you should be comfortable editing text in Vim and know what terms like "buffer", "window" and "insert mode" mean. > > The book is divided roughly into three sections: > > - The first covers basic Vim commands that you can use in your ~/.vimrc file to customize Vim quickly and easily. > - The second looks more deeply at Vimscript as a programming language, covering things like variables, comparisons, and functions. > - The third walks through the creation of a sample plugin intended for distribution to other Vim users. (https://learnvimscriptthehardway.stevelosh.com/)