Everything you need to know about Vim's swap files
Vim Tricks and Tips Blog Posts
Should you disable Vim's swap files (.swp) being created?
How to sort lines of text from within vim (super easy!)
A quick way to sort text in Vim
Vim tip: The best line number config (current + relative line numbers)
A simple .vimrc config option so you can always see the current line number, along with relative line numbers above or below the current line