I want to learn everything as much as possible

To those of you in whichever field you’re in; whether it’s doctor, mechanic, plumber, teacher, lawyer, programmers; etc. Please drop book recommendations or links to websites that can allow me to teach myself on said material. I’m looking for something that will really help me, as going online can be tricky with so many links, most of which only provide aspects of information. Thanks in Advance.