Fish after parking and dad's picked up tackle (8)
I believe the answer is:
approach
'up tackle' is the definition.
'approach' can be an answer for 'tackle' (thesaurus). I am unsure of the 'up' bit.
'fish after parking and dad's picked' is the wordplay.
'fish' becomes 'roach' (roach is a type of fish).
'after' says to put letters next to each other.
'parking' becomes 'p' (abbreviation on road signs).
'and' is a charade indicator (letters next to each other).
'dad's picked' becomes 'ap' (I can't justify this - if you can you should give a lot more credence to this answer).
'roach' after 'p' is 'proach'.
'proach' after 'ap' is 'APPROACH'.
Can you help me to learn more?
(Other definitions for approach that I've seen before include "Come towards" , "Come closer" , "Border on" , "What happens before landing" , "Get closer to" .)