Ditch the Textbook Facebook Page

If you read most textbooks, they are often (aside from AP ones) little other than the state required "essential knowledge" with verbs thrown in.  I believe they are popular because they are easy as in a teacher telling his/her students to just read pages 33-35 as opposed to giving a flipped lecture and then finding a primary document (something rarely found in a textbook) or exercise (which some books do come with).  In three of our my courses this year my students are using it as a resource and that's it and I am working on the 4th little by little.  At any rate, I just found a Facebook page called "Ditch the Textbook" which I am going to be looking at a lot this year for ideas.