Steer clear of area containing nothing (5)
I believe the answer is:
avoid
'steer clear' is the definition.
(I've seen this before)
'area containing nothing' is the wordplay.
'area' becomes 'avid' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'containing' is an insertion indicator.
'nothing' becomes 'O' (looks like zero - 0).
'avid' placed around 'o' is 'AVOID'.
'of' is the link.
Can you help me to learn more?
(Other definitions for avoid that I've seen before include "Shy away from" , "Stay away from or circumvent" , "Keep away from (someone/something)" , "Duck" , "Eschew" .)