I've invested several hours in a human adventurer and want to learn the secrets of life and death. Unfortunately, I failed to invest any skill points in
Reader at character creation. Is there any way for me to attain literacy?
As far as I know, there is no way to become literate unless you have some skill in reading in the first place. I believe I read something to that effect in the Adventure Mode Quickstart on the DF wiki.
Edit: It may not have been in the wiki, as I can't find it there, but I remember reading it somewhere. It might have been on the forums.