Looking for recommendations for someone who loves physics but is not in college/university. I'm a 39-year old engineer.
I highly recommend Six ideas that shaped Physics by Thomas Moore. Every volume in the series just oozes physics, emphasizing symmetries and how the physics flows from some core concept.
It’s written at the first year University level, but I think it’s too rich in physics for the typical 1st year student mostly interested in just passing a required course.