At first find computer technology appropriate (3)
I believe the answer is:
fit
'appropriate' is the definition.
(similar in meaning)
'at first find computer technology' is the wordplay.
'at' means one lot of letters go next to another.
'first find' becomes 'f' (1st letter of 'find').
'computer technology' becomes 'it' (abbreviation for information technology).
'f'+'it' is 'FIT'.
(Other definitions for fit that I've seen before include "Suitable; healthy" , "Able-bodied" , "Strong" , "Be the right size or shape" , "Attractive" .)