After downloading the update, launch the game and look for “Mods” in the Fallout 4 menu.
Budding architects should note that mods are limited to 2GB in size, though they can be smaller.
As a follow-up to its announcement that Fallout 4 on Xbox One will receive mods next Tuesday, May 31, Bethesda held a livestream to discuss particulars such as size limit and how to search for and install mods.
You can also browse mods on mods.bethesda.net if you prefer the more comfortable experience of using Web browser-esque interfaces on PC.