I never went to school, but have found that many books I want to read (incl. texbooks) can be found easily as a pdf with a google search (although this is becom

I never went to school, but have found that many books I want to read (incl. texbooks) can be found easily as a pdf with a google search (although this is becoming less common for me, sadly). I once, suggested to a struggling friend that instead of paying for a textbook, they should see if they could find it in such a way. Turns out, many newer book require codes to unlock assignments that can only be had by purchasing the book.