Help them (being backward) to get into TV etc. (5)
I believe the answer is:
media
'get into tv etc' is the definition.
I can't judge whether this definition defines the answer.
'help them being backward' is the wordplay.
'help' becomes 'aid' (synonyms).
'them' becomes 'em' (abbreviation).
'being backward' shows that the letters should be reversed in order.
'aid'+'em'='aidem'
'aidem' backwards is 'MEDIA'.
'to' is the link.
Can you help me to learn more?
(Other definitions for media that I've seen before include "Purveyors of information to the public - I made them" , "Collective name for newspapers, broadcasting etc" , "Press, TV etc" , "News outlets" , "means for spreading news" .)