Team moves:
Keep collecting Quidditch cards for your team until your receive the Quidditch card for its special move. REMEMBER: Look at the locked cards to find out their unlock requirements. You must get enough cards to do the team's special move. A message under your team score will appear when you are able to do the team special move. Play well during a match to increase your Snitch power bar until the message appears.

House Challenges:

For the Passing challenge, when a ring turns white, it is about to change to either yellow or green. Use that to see who to shoot it to.

For the Tackle and Shoot, it is best to tackle as soon as you can. When you shoot, look carefully for an open ring. Hold Shoot (Circle), then launch.

For the Seeker, hold X until you get close enough. REMEMBER: It may be difficult to steer.

For the Beaters and Bludgers, the best way to avoid the Bludgers is to stay either ahead of it or to the side of it so the Beaters can whack it away.
User Cheat by BeanTown323

For the Special Moves, use a similar strategy from Tackle and Shoot, except with a Special move.
User Cheat by BeanTown323

For the Combos challenge, hold L1 + R1 down and keep pressing X as fast as possible to do up to eight combos. Watch out for the Keeper.

World Cup:
To play in the World Cup, you must defeat all three other teams with one team.

Bulgarian team:
After collecting 65 Quidditch Cards.

Nimbus 2000 broomstick:
After collecting 20 Quidditch Cards.

Nimbus 2001 broomstick:
After collecting any 35 Quidditch Cards.

D'orazio Dive skill:
After collecting 25 Quidditch Cards.

Firebolt skill:
After collecting 50 Quidditch Cards.

Edgar Cloggs:
After collecting all Quidditch Cards.

More Quidditch Cards:
To get more Quidditch Cards, play the Challenges and beat the Team Record.

Win matches, each with a different team, in the Hogwarts or World Cup.

Better items:
To acquire almost anything, you must first collect Quidditch Cards. To unlock the best broomstick, the Firebolt, you must collect 50 Quidditch Cards.