The art of spelling (5)
I believe the answer is:
magic
'spelling' is the definition.
(use of spells)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for magic that I've seen before include "Superb" , "Great" , "Enchantment" , "Brilliant -- deception" , "Wizardry - wizard!" .)