No figures or tutorials, but there are videos that I made and that the author made that should help. Also, as long as they last, here are YouTube videos showing Neil deGrasse Tyson explaining how Neptune was discovered, and Vulcan was not. Finally, here is the GRAVITY WEBSITE I showed you in class. Left click and right click to play with it.
Source: Simulation by Hermann Björgvin Haraldsson
Source: HEWITT, P. G. (2015). CONCEPTUAL PHYSICS (12TH ED.). BOSTON, MA: PEARSON.
Source: The Great Courses: Inexplicable Universe
You won't be tested on this, but I thought you might like to learn about the recent discovery of gravity waves: how they did it, and what it might mean. Enjoy!