This covers obtaining the ISO, connecting to Wi-Fi, partitioning, formatting, mounting, installing, setting up encryption and installing GRUB, in one article. Also includes some tips, like quickly mounting from install medium. Maybe this helps someone.
Sorry. It should be BTRFS
It was from a GitHub Gist but idk which exactly it was, there are multiple. Keep in mind some files need to have copy-on-write deactivated (swapfile, VirtualBox disk images). The Arch Wiki mentions when copy-on-write should be turned off for a file