I would start at 10 meters or yards, otherwise sighting-in can be difficult.

A new shooter shooting at 30 yards will find the groups sizes depressing.

10 meters, open sights, until you have mastered trigger-pressing and breathing techniques. You should be able to hit a 5 pence piece with a PCP at 10 meters every time, ten pence piece with a springer.

If no open sights then use the lowest magnification on the scope.

Get an experienced marksman to coach you.