The full updated Radare2 (official) cheatsheet can be found here: https://github.com/radare/radare2/blob/master/doc/intro.md
I use this gist to gather the Radare2's commands I use the most and add some notes that the official cheatsheet is missing.
-w: Write mode enabled
-p [prj]: Creates a project for the file being analyzed (CC add a comment when opening a file as a project)