This first time i’m installing Endless OS, but i’m don’t like icons and themes default. Endless OS use Gnome Desktop Environment with customize, endless not yet fully include other gnome apps in repository.

Guide to install minimal Debian server. You need to download ISO image, following this link: https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-9.0.0-amd64-netinst.iso Debian Base System This image installation need to stable internet connection. If you install on real machine, need to make bootable CD/DVD/USB Drive.