Info pages, help and manuals are built into the system and commands. You don't have to leave the shell to read anything. I've also explored it just by pressing a letter or two and then autocomplete. But you realize that average people need help to figure out a GUI too, right?

A car manual is more comparable to learning how to drive in the first place. And yes, sometimes I've consulted the manual to figure out what lights mean or how controls work.