Talkative type drops good guide (5)
I believe the answer is:
usher
'guide' is the definition.
(an usher guides people)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for usher that I've seen before include "Guide at wedding" , "One escorts people to seats" , "He shows people to their seats in theatre" , "Theatre attendant" , "Doorkeeper, escort" .)