Buying players - If you want to buy a player, bid for them about 1 or 2 million above the asking price. This ensures you of signing that player. Players that are worth buying include:
Easy goals - If you are defending or playing the ball around the midfield, get the ball from your opponents. Give the ball to a player whose shooting precision and power is over 60 and you may train them for better results (for example, Beckham, Figo, Ronaldo, Van Nistelrooy, etc.). Run to the half of your opponents. You may see a lot of space in front of you. Then, press Shoot. Just before the meter gets red, release it. The goalie will stand too far from his goal and the ball may go in. You have about a 50% chance that your player will score from way out.
Easy win - Choose a side to play on. Then during a game, press Start and choose "Select Sides". Move your controller under the opponent's side and resume the game. Then, score as many goals as desired (while under the opponent's side), then just switch back to your side again. This way you will have a big point lead, depending on how many goals you scored. This trick also works better when you switch back to your side near the end of the second half.
English Premiership and German Bundesliga teams' third kits - Reach level 40 in your EA Bio to unlock the English Premiership and German Bundesliga teams' third kits. Alternately, defeat all teams in those leagues.
French Ligue teams' third kits - Reach level 10 in your EA Bio to unlock the French Ligue teams' third kits. Alternately, defeat all teams in this league.
Getting good players - Go to the options menu then to "Player Swaps". Swap all the good players desired onto the team you want to play as, then save that as a squad. Call it whatever desired. Then go to "New Season" and select "Current Squads" and play your team. This is useful for a third division team. This team now has all the good players.
Italian Division 1 teams' third kits - Reach level 20 in your EA Bio to unlock the Italian Division 1 teams' third kits. Alternately, defeat all teams in this league.
Most teams' third kits - Reach level 5 in your EA Bio to unlock most teams' third kits.
Recommended team - Create a team with the following players:
Spanish Premeira Liga teams' third kits - Reach level 30 in your EA Bio to unlock the Spanish Premeira Liga teams' third kits. Alternately, defeat all teams in this league.