I’m a college student who’s experienced several variations of book qualities over time. This one in content, style, readability, etc. is among the best. Perfect for those getting their feet wet in Physics with little or no previous idea. Useable as a reference, or reading for fun if your curious how things work like me. Good enough I bought the book; I have another rented one for class. I really am enjoying it, and I’m neither engineer nor physicist. Just a very inquisitive person.