Hot-headed fellow nearby (5)
I believe the answer is:
handy
'nearby' is the definition.
(I've seen this in another clue)
'hot-headed fellow' is the wordplay.
'hot' becomes 'h' (abbreviation eg on taps).
'headed fellow' becomes 'andy' (I can't justify this - if you can you should believe this answer much more).
'h'+'andy'='HANDY'
Can you help me to learn more?
(Other definitions for handy that I've seen before include "Useful and convenient" , "Convenient; skilful" , "Convenient summary" , "Accessible" , "quite useful" .)