What I learn about science, I learn it from scientists and the books they wrote.
You wanna learn about religion, ask a priest (or a pastor, a rabbi, a a imam, etc. depending of which religion you wanna learn about)
You wanna learn about History, ask an Historian
You wanna learn about laws, ask a lawyer (or a jurist)
You wanna learn about finance, ask a banker (or a trader).
You wanna learn about maths, ask a mathematician (or a maths teacher, depending on how much you already know)
You wanna know about war, ask a veteran
You wanna learn about dinosaurs (or mammoths, saber-toothed cat, or any ****** species that no longer exists), ask a paleontologist.
These guys have dedicated their lives to their areas of expertise, they have on that particular topic a knowledge that no one has except them. Despising them, is despising that knowledge. It's despising Galileo and Newton and Archimedes and Benjamin Franklin, etc...