::
And yeah, @mattjuniper, that reading is a mess. Here’s what I did: pick an in-chapter blue box problem (one that’s sufficiently comprehensive) and work through it, looking back to the formulas and stuff. As you go, write down the steps you used to get through it. This will make it clearer in your head, because you have to concisely describe the steps that you are using. After that, you don’t need to understand it as much as you just have to memorize the “steps to calculate” that you just created.