Installing Arch Linux using the official ISO (Should know), explains the procedure to get Arch Linux installed on your system using the official installation media.

Installing Arch Linux using the Archboot ISO (Should know), explains the procedure to get Arch Linux installed on your system using the Archboot installation media.

Configuring your system (Should know), explains where to set your hostname, load special modules, and have a different keyboard layout than QUERTY.

Installing and removing packages (Must know), explains how to use the package manager (pacman) for adding and removing packages.

Booting and managing services with systemd (Should know), explains configuring and managing how your system starts up and what services are being started automatically, but using systemd and not sysvinit.

Booting and managing services using initscripts (Should know), explains configuring and managing how your system starts up and what services are being started automatically using initscripts.

Configuring GUI using Xorg (Should know), briefly explains how to get your GUI up and running.