A room to want to know about? (7)
I believe the answer is:
kitchen
'a room' is the definition.
(I know that kitchen is a type of room)
'to know about?' is the wordplay.
'to' becomes 'itch' (I can't justify this - if you can you should give a lot more credence to this answer).
'know' becomes 'ken' (I've seen this in another clue).
'about?' means one lot of letters goes inside another.
'itch' going within 'ken' is 'KITCHEN'.
'to want' is the link.
Can you help me to learn more?
(Other definitions for kitchen that I've seen before include "food prepared here" , "Cook's place" , "Cookhouse" , "In workplace" , "Cooking area" .)