Paul, Basso has a new book out, just last December, called The Fast Track to Determining Transfer Functions of Linear Circuits: The Student Guide. It's a paperback and is a
workbook format that looks a lot like his posts here, just repeated for lots of examples. (I'm holding it in my hand.) For extensive practice to deepen ideas and develop muscle memory of sorts, this paperback is perhaps the better one. However, it won't answer questions like "Why this and not that?" For more of that, you may need to go back to Middlebrook, himself. Or wait here for Basso...