Warns about spending time in the media (8)
I believe the answer is:
presages
'warns about spending' is the definition.
'presages' can be an answer for 'warns'. I'm not sure about the 'about spending' bit.
'time in the media' is the wordplay.
'time' becomes 'age' (an age is a period of time).
'in the' indicates putting letters inside.
'media' becomes 'press' (the press is part of the media).
'age' put into 'press' is 'PRESAGES'.
Can you help me to learn more?
(Other definitions for presages that I've seen before include "Forecasts" , "Augurs, bodes" , "Foreshadows, is advance sign of" , "Foreshadows in press age" .)