In one sentence, describe what the following article is about:

ractice aiming your paintball gun. Practice looking down the barrel and aiming your paintball gun, and take the gun into a safe location with a solid backstop and take a couple shots to get used to the accuracy.  If you have a vertical feed gun, look down the right or left side of the barrel to aim. Even though it looks cool, don't shoot from the hip. Do not just pull the trigger and watch the balls fly. AIM from the shoulder and correct your aim as you shoot. Learn how accurate your gun is at distance. Most guns will be accurate at 50 feet (15.2 m). If you are farther than 50 feet (15.2 m) you may be less accurate than someone who plays PB well, has a better gun, and has better paint. If you have bad accuracy over 50 feet (15.2 m), get closer so you can make up for it. When you run out of ammo, you'll need to be able to load it up again quickly to keep firing when you're playing. Practice unloading and reloading your paintball gun regularly so you can stay in the fight.  Open up your new load of paintballs before you shoot the last of what's in your hopper.  This helps keep your opponents' heads down while you reload. Standard loaders need to be opened up, which you'll usually want to do before you reach for a new load of paintballs. Opening the lid can be difficult without your hands free. Some paintball guns have "speed-feeds" which have no lids and are super-fast to reload. It's good to learn the old-fashioned way, but go for a newer speed-feed if you want to invest. Being a crack shot from a standing or kneeling position is one thing, but being able to shoot on the move will help you become a great paintball player. When you've got your gun and have practiced operating and loading it, practice moving safely with your gun, and firing while you move.  Practice moving side to side, and keeping your gun at a steady level. Set up some cans or other targets to strafe as you run. Only practice in safe areas with a backdrop. The backyard's probably not the best idea. Find a place where you can set up some cans to practice firing while you move. Stealth is one of the most essential parts of being a good paintballer. It's not all running and gunning, heading straight into the belly of the beast and coming out having tagged all your opponents. That'll only work some of the time. Learn to hide and to blend in with your surroundings as well.  Run with your legs flexed, your head down, and your body as tight in as possible. The more you run around flailing about, the more exposed you'll be to enemy fire. Practice finding cover and making yourself as small as possible. Practice firing behind cover, popping out for minute to shoot, then hiding again. Get a barrel squeegee, gun oil, and valve o-rings to replace parts as necessary. All of these items should come with instructions so you should be able to figure out what to do.  A clean barrel is an accurate barrel. Squeegee the barrel regularly to keep excess paint gunk from clogging it up. If you continue to play paintball you will want to buy a squeegee to help clean your gun. If you can, check your barrel between games to make sure it's clean. If you see spray spewing from your barrel, you know it's dirty and won't shoot straight. Clean it or ask someone how to.

Summary:
. Practice reloading your gun quickly. Practice running and shooting. Get your creep on. Learn to maintain your gun.