Hotel guest and I study others outside (8)
I believe the answer is:
resident
'hotel guest' is the definition.
(I've seen this before)
'i study others outside' is the wordplay.
'study' becomes 'den' (I've seen this before).
'others' becomes 'rest' (I've seen this before).
'outside' indicates putting letters inside.
'i'+'den'='iden'
'iden' put within 'rest' is 'RESIDENT'.
'and' acts as a link.
(Other definitions for resident that I've seen before include "Inmate" , "Dwelling in a place for some time" , "Inserted by permanent inhabitant" , "One living somewhere" , "one in the house?" .)