We have a physicist with two papers in Nature in our amateur astronomy organization. That guy is wonderful with kids in general, it is amazing to see, and great with us as well as far as explanations are concerned. Now, any adult question on fields others than the field he is working on, he passes and often essentially says "not my field, I know nothing about it".
If you are interested in Physics, may I recommend this book as a generic starting point?
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it is not an easy read but it tells you a lot about the concepts and the tools of the trade. It generally won't help you to understand physics papers but at least you will know what they talk about and how they talk about it in most cases.
https://www.amazon.com/Road-Reality-Complete-Guide-Universe/dp/0679776311
And yes, Penrose is a mathematician and has been known to be severely biased