It's got strings and frets. What more do you need?
A guitar player has already got the fingering technique, so you should be able to get "a tune" out of it within half an hour. It does take a moment to get used to the 5ths violin tuning, and transpose your guitar chords onto the mandolin neck.
I got one for Christmas one year, and got to bore everyone by playing them a wobbly version of Midnight On The Water after lunch.
I did notice that, like any new guitar, it would benefit from a setup, the action was very high.
My mando playing is still wobbly