Instructed socialist and rode off first (7)
I believe the answer is:
ordered
'instructed socialist' is the definition.
'ordered' can be an answer for 'instructed' (I've seen this before). I'm not certain of the 'socialist' bit.
'rode off first' is the wordplay.
'off' indicates an anagram.
'first' becomes 'red' (I can't justify this - if you can you should give a lot more credence to this answer).
'rode' is an anagram of 'orde'.
'orde'+'red'='ORDERED'
'and' is the link.
Can you help me to learn more?
(Other definitions for ordered that I've seen before include "Methodically arranged" , "Called for" , "Instructed" , "Issued instructions" , "Issued a command" .)