Getting the bug and becoming good at fishing (8)
I believe the answer is:
catching
'getting' is the definition.
('catch' can be a synonym of 'get')
'bug and becoming good at fishing' is the wordplay.
I cannot really understand how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
'good' could be 'g' (abbreviation) and 'g' is located in the answer.
'at' is within the answer.
This may be the basis of the clue (or it may be nonsense).
'the' acts as a link.
Can you help me to learn more?
(Other definitions for catching that I've seen before include "Attractive - infectious" , "Contagious" , "Stopping and holding a moving object" , "getting infectious" , "Getting hold of or becoming infected" .)