I binge read all of Mother of Learning in four days. It’s wonderful fun fluff progression fantasy. Don’t expect any kind of deep meaning or metaphor out of it, just go in and have fun in a time loop with Zorian as he learns from his classmates and builds a bunch of cool toys and tries to save Cyoria from invasion.

Fine Structure is one of those books that you read once, then you either read again two or three more times, this time taking notes, or you immediately google “Fine Structure explanation” and read the results of other people doing the same. I’ll save you that googling part for the second option and link the FAQ (yes, the author has an FAQ page). It does, at least, make a lot more sense than Primer.