An opponent will not always come from the front. If you are unsure whether a Paintball has burst and you are out of the game ask a referee or a team mate to check you out. If there is anything you are unsure of or need help with, ask a referee - that's what they are there for. Know the game objectives and work to achieve them. Remember . . .
Winners are Grinners.
Watch your cover. Where possible stay with most of your body behind cover. Try not to walk out in the open. Crouching or kneeling is best. Avoid lying flat where possible as it will be harder to move in a hurry.