Old poem, for instance source of Home Thoughts, from Abroad? (8)
I believe the answer is:
overseas
'abroad?' is the definition.
(both can mean in another country)
'old poem for instance' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'poem' becomes 'verse' (verse is a kind of poem).
'for instance' becomes 'as'.
'o'+'verse'+'as'='OVERSEAS'
'source of home thoughts from' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for overseas that I've seen before include "abroad - with 12a" , "Exotic" , "In foreign parts" , "In a foreign country" .)