If heading north, have one's home in a warm place (8)
I believe the answer is:
fireside
'home in a warm place' is the definition.
'fireside' can be an answer for 'home' (fireside is a kind of home). I am unsure of the 'in a warm place' bit.
'if heading north have one's' is the wordplay.
'heading north' says the letters should be written backwards (in a down clue, letters travel north).
'have one's' becomes 'reside' (I can't explain this - if you can you should believe this answer much more).
'if' back-to-front is 'fi'.
'fi'+'reside'='FIRESIDE'
Can you help me to learn more?
(Other definitions for fireside that I've seen before include "Warm part of room" , "Warm domestic spot" , "Hearth area" , "in the home" , "somewhere cosy" .)