This is off-topic, but the Gentoo installation guide that this page is a part of is one of the most comprehensive and accessible Linux guides I've ever read. It taught me a lot of Linux concepts that I never needed to use before when setting up cloud VMs, and now I have a fully working installation of Gentoo + GNOME (with an encrypted root partition) that I'm confident in managing and upgrading. I definitely recommend checking out the rest of the guide.

https://wiki.gentoo.org/wiki/Sakaki%27s_EFI_Install_Guide