By the way, I've already gained some benefit from starting to read the Cambridge Grammer, for example understanding how many morphological differences in principle parts of verbs and peculiarities of certain noun endings arise from historical vocalization changes (loss/assimilation of vowels, disappearing consonants, etc) or from analogy (copying patterns of other verbs/nouns) and knowing stuff like this seems to help me learn verb/nominal endings/patterns better. And having read the first chapter, I now understand phonetic terminology a little better (though I follow the Koine pronunciation rules when I read the GNT/LXX to myself) and also terms like crasis, elision, ablaut etc which previously weren't clear in my understanding.
On the other hand, some of the stuff in the first chapter just went "whoosh!" over my head

But so far the book has been fun reading, and I guess that's the bottom line when it comes to staying motivated to learn, isn't it? Anyways, my plan is to read through the entire book over the next 3-4 months (sehr optimistitch!) and simply absorb what I can and not worry about the rest. Then I hope to circle back on specific topics as they interest me (e.g. aorist) and use this book and perhaps some other resources to try and understand more deeply, especially as it relates to Koine.
Finally, your comment about the Hebrew perfect opens up a whole new avenue of exploration for me, but having tried (and given up) learning Biblical Hebrew many years ago, I unfortunately don't plan on heading down that path again. But much appreciate your comment anyways
