Is the "Alt Right" just 50 internet trolls?

Been hearing a lotta talk about the evils of the "Alt Right".  I never heard of 'em before the last election when all of a sudden they were evil incarnate, snatching victory from the lips of Hillary Clinton.  I don't know the names of any alt-rightists, I don't know of any books they have published, any blogs, any websites, any magazine articles.  For a group that is credited with so much, they are pretty near invisible.