Try to get information from shoe? (4)
I believe the answer is:
pump
This clue is a double definition.
'try to get information' is the first definition.
'shoe' is the second definition.
(I know that pump is a type of slip-on shoe)
'from' is the link.
(Other definitions for pump that I've seen before include "Compressing machine" , "Light shoe worn for dancing" , "Fluid moving device" , "Cross-examine; siphon" , "Device for moving fluids" .)