One helping your studies of wild trout (5)
I believe the answer is:
tutor
'one helping your studies' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'wild trout' is the wordplay.
'wild' is an anagram indicator.
'trout' is an anagram of 'TUTOR'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for tutor that I've seen before include "He shows us the way" , "train" , "Private educator" , "School" , "class leader" .)