If someone asks you to go to Cherno, don't go to cherno :P Trust is a huge thing in DayZ. Always mention you are friendly, and even after that, when you bump into other players, aim at them, tell them to drop their weapons, and make sure they are friendly. Or vice versa. It could save your skin. Whenever you see a chopper or hear gunshots, hit the ground and scan your surroundings for a while. Last thing you want is to be spotted by a ghillie sniper (camo guys that are very hard to spot) or get destroyed by a chopper gunner. Also, whenever you hear flies, it usually means someone has died near you, as with the shots, also go prone for a bit or crouch to make sure whoever killed that person is long gone. Ammo is important. Don't waste shots. And if you can, don't shoot too often unless it's 100% necessary. Other players and zombies can hear the shots and go towards your direction. Food consumption. Don't eat or drink until your meters are below 1/4 or flashing. It's more efficient and to no ill effect. Use them at the last minute and you save time and food. Vehicles. as with guns, they make a lot of noise and you are visible from quite a long distance. If you have one, take the backroads and avoid the main highways. At night: Flashlights, flares and glowsticks. These make you extremely visible at night, so unless it's pitch black, try to navigate by turning on and off your flashlight, or if you're lucky, get a nightvision set. When it's full moon, I wouldn't really bother using a flashlight as much. Simply heighten your brightness and gamma to see better. That's pretty much it. Enjoy the game! :)