- How to do the most basic things
How to search for a package: 'sudo pacman -Ss packagename'
How to install a package: 'sudo pacman -S packagename'
How to update: 'sudo pacman -Syu'
How to remove a package: 'sudo pacman -Rcns packagename'
How to clean old packages: 'sudo pacman -Sc --noconfirm'
Arch linux installer (official): 'archinstall'
...and that is (pretty much) all you need to learn to use Arch linux in an acceptable fashion. Now go ahead and give it a spin -- you'll love it.