Help w/visiting Rushmore,Yellowstone and Tetons?

Each national park/monument has an excellent web site listing things to do, road information, campground information, etc. If you're making the effort to see these two huge parks then don't look for things to do outside the parks. There is so much to do in the parks themselves you won't have time to do it all.

https://www.nps.gov/yell/planyourvisit/index.htm

https://www.nps.gov/grte/planyourvisit/index.htm