Undemanding plus stimulating - basic requirement for reading! (8)
I believe the answer is:
literacy
'for reading' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for literacy that I've seen before include "Writer's skill" , "education?" , "I lay cert (anag.)" , "Ability to read and write" , "The 3 Rs" .)