Frustration Incorporated

Don't Bother to Practice Flying! - Piloting helicopters and jets are one of those things that are best learned during online games with other players. Don't worry if you've never flown one before, and you lost your BF2 instruction manual, and you have no computer monitor, and instead of hands you have bulbous, sweaty claws that flail out uncontrollably at random objects surrounding you. Just hop on in and hope for the best! If you're really unsure how to fly, like you experience extreme difficulty when attempting to determine which direction is "up" and which direction is "the bathroom," request other teammates to hop in and fly with you. They'll offer tomes of useful advice and will gladly take over the controls after you've flown so badly that you've somehow ended up in a completely different game altogether.

Always Play As a Sniper! - The sniper is singlehandedly the most awesome and useful class in the universe. I mean, they have sniper rifles, for crying out loud! SNIPER RIFLES! Some of the most successful BF2 teams were composed entirely of snipers, sharpshooting enemies from hundreds of meters away and snuffing out souls like a rogue Twinkie lobbed into your damp, subterranean computer lair. Many squad leaders will often request large amounts of snipers to join their team since the core of any useful squad is a sniper ready and willing to sit in one single location for 30 minutes, shooting at tanks and calling for supplies while refusing to move for any reason short of an air strike directly on their head. Never underestimate the monumental contributions a sniper can lend to any squad that really likes crouching in one location for days and missing virtually everything they aim for.