Before you shoot it, run a patch through the bore, make sure the action screws are tight and run a few thicknesses of paper down the barrel channel to see if the metal is too close to wood (if it's supposed to be free-floating).
Then, pick up several makes/weights of factory rounds to test the rifle with. Make sure you fire the rifle for groups from both front and rear rests at a bench.
Don't worry about the first couple of shots. Just shoot them at 25 yards to get a rough scope zero, then move to 100 and start getting a little more serious.
People are like rifles. Some are tried and true, having great eyes, personality, and fun to be with. Others never seem to hit the mark with you. Still others go off half-cocked. Still, it's nice to know most of them.