This guide is no longer valid since the removal of the base group. (See here.) If I ever need to reinstall my system I will update it.
OBJECTIVE: Install Arch Linux with encrypted root and swap filesystems and boot from UEFI. Have a finished Arch Linux Installation with some basic packages I use both from the official repositories as well as the AUR
The official Arch installation guide contains details that you should refer to during this installation process. That guide resides at: https://wiki.archlinux.org/index.php/Installation_Guide