You can now create and use Fallout 4 mods on PC. Coming to PS4 next then Xbox

Its been a long time since Bethesda announced that mods will be coming to Fallout 4, and now the creation kit is ready. With the creation kit you can now create, or take anything in the game to make something new, or add more to it. This will be a new way to get mods on the PC instead of searching one online. And since Bethesda is promoting the creation of mods, no copyright material or objects will be mods anytime soon.
You can start your mod creation spree by downloading the Bethesda.net launcher, log into steam, then right click Fallout 4 select properties, then betas. Your game should update and now your ready to make/use mods. This video will further explain the creation kit.

Xbox One mods will be coming out in May, and the month after PS4 mods will be coming.