In the off-season, after you re-sign your players, save the game. Enter Free Agent mode. If you do not like the free agents available (for example, if you need a top wide receiver and there are none), reload the game until you like the players that are available. You can also do this to make your division easier. For example, if you are the Jets and Randy Moss goes from the Patriots to the Rams, then you do not have to worry about facing a player like that twice a season.
Get a spread set with two receivers on one side. Then, do a hot route on the inside receiver, and press the Right Analog-stick in the opposite direction of the quarterback, making an outer slant. This should help you get a lot of yards and score.
You can make depth chart changes to make training players easier. For example, if you are training someone on defense, such as a linebacker, go to the depth chart and substitute the running back for someone with a lower rating. This will make things easier when you do the lineman challenge. You can use this trick to help train almost any position.
After all Week 17 games have been played (including your own), trade all of your draft picks to the worst team in the NFL. Once you have traded all of them, you will have the first pick of every round instead of whatever you had. Note: This only works if you have turned the trade deadline off before starting your franchise.
Go to "My Madden", and select "Rosters". Go to "Player Management", and select "NFL Greats". Find Brett Farve, and release him. Then, go to "Free Agents", and sign him to the Jets or any team desired.
Use the following trick to re-sign players for less in the off-season. When you go to re-sign players, go to the "Player Management" screen first. Change the player that you want to re-sign to another position, such as a kicker or punter (the worst overall possible). Go back to re-sign that player for a lot less. Note: You cannot save the change unless you have enough players at that position after you change the player's position. For example, to change a cornerback to a kicker, you must have four other cornerbacks remaining.
Go to "My Madden", and select "Rosters". Go to "Player Management", and select "NFL Greats". Release whoever desired. Then, go to "Free Agents", and put the desired player on a team. When you start Superstar mode, play as a rookie and find your player. If you selected a great, he should be close to the top. This also works if you create a player. When you create a player and put him on a team, he is a rookie. When you go to Superstar mode, he should also be there.