Very good of her to love a pure horse, perhaps (9)
I believe the answer is:
superhero
'a pure horse perhaps' is the definition.
I can't judge whether this definition defines the answer.
'very good of her to love' is the wordplay.
'very good' becomes 'super' (I've seen this before).
'of' indicates an anagram (the answer comes from or 'of' the letters).
'to' means one lot of letters go next to another (I've seen this in other clues).
'love' becomes 'o' (love means zero in tennis).
'her' put after 'o' is 'oher'.
'oher' is an anagram of 'hero'.
'super'+'hero'='SUPERHERO'
Can you help me to learn more?
(Other definitions for superhero that I've seen before include "Comic strip character" , "Fictional character with special powers" , "I'm often seen in a cape" , "Fictional character with strange powers" , "Spiderman, for example" .)