GNOME

GNOME is a feature-rich desktop provided by the GNOME Project. It is one of the most widely-used desktops for Linux. It has been an important part of Gentoo for many years.

Portage currently has two versions of GNOME available in the main package repository. Each version is slotted. Version 2 is the traditional GNOME environment. Version 3 features a redesigned UI (among other areas).

See the GNOME Guide for more a more detailed approach on installing, configuring, and using GNOME.

GUI user's guide
GNOME 3's GUI is a total upheaval for users of GNOME 2. Getting familiar with it, at least for its basics, is a matter of minutes provided the user is directed to the right entry point. A rather good entry point to quickly get familiar with this new GUI is the GNOME Help page.

External resources

 * Dantrell B.'s "GNOME without systemd" homepage on GitHub