Unless youve just read a handful of books in your life it is impossible to give a good answer to the question.

Books are not oranges.

The Boy's Second book of Electronics by Alfred Morgan(1957) introduced me to electronics in the 1970s, and lead to a technical mindset and lifestyle.

The Engineers Notebook by Forest Mims really taught me the basics of electronics.

What do you care what other people think by Richard Feynman(1988) introduced me to the idea that nobody is really as much of an expert as you might think.

1632 By Eric Flint, and the subsequent series, got me thinking about the nature of civilization and all the things that go into making it.

There are a lot of books in this world, and they all helped author who I am.

The best book I've partially read is the New Testament. The best book I've actually read is Taleb's Antifragile.