Introduction to Pointless, with tips from Alexander Armstrong, maybe identifying idiom (8)
I believe the answer is:
parlance
'idiom' is the definition.
(I know that idiom can be written as parlance)
'introduction to pointless with tips from alexander armstrong maybe' is the wordplay.
'introduction to' suggests taking the first letters.
'with' is a charade indicator (letters next to each other).
'tips from' suggests removing the centre.
'armstrong maybe' becomes 'lance' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'alexander' with its middle removed is 'ar'.
The initial letter of 'pointless' is 'p'.
'p'+'ar'+'lance'='PARLANCE'
'identifying' is the link.
Can you help me to learn more?
(Other definitions for parlance that I've seen before include "Jargon" , "Manner of speaking peculiar to a specific group" , "Earn clap for vocabulary of particular subject" , "Way of using words" , "Conversation" .)