Great to see optimization on the front page of HN! One thing I love about the book is it's full of really nice figures. If like me you love visualizations, you may enjoy this website I've been working on to visualize linear programming (LP) solvers: https://lpviz.net.

It's by no means polished, but it can be pretty fun to play around with, visualizing how the iterates of different LP algorithms (described in sections 11, 12 of the book) react to changes in the feasible region/objective, by just dragging the vertices/constraints around.

If you go to https://lpviz.net/?demo it will draw a polytope for you, and click around the interface to show off some of the features. I'm constantly chipping away at it in my free time, I welcome any feedback and suggestions!