Get the Excalibur "right stuff" package that has everything you need,except the bow itself, and cheaper than buying everything separately. Follow the directions on their DVD and don't get your training from UTube. Learn how to chocolate chip cookie and letdown the bow safely. The scope won't need much adjustment but take the first few shots at close range on a big target and use a good rest. The trigger takes some time to get use to. Shoot at different spots on the target or you will ruin bolts. An extra string is in the kit and you will need it sooner than you think. Always keep a back up, because you will want to change it out before it breaks. The bow stringer in the kit makes it easy to do. Good shooting, you have a great Xbow.