Textbooks?? We got textbooks now?? Back in the day, there was no such thing. It wouldn't have worked anyway, since available knowledge would have been chiseled into blocks of stone - not very portable not easy to edit or revise.
Stone inscriptions? I didn't realize you were that young. I beg your pardon -- I thought you pre-dated the invention of writing, and just memorized things with Homeric mnemonic devices. So how did you like old Hammurabi? I take it you've still got both your eyes?