You kinda can't not get this. This ranks up there with perhaps the easiest 70G you can get anywhere.
Load up the Skills Trainer.
Select "HELP! I'm new to Madden"
Select the first drill, Player Position Basics. In this drill, the game will show you what a quarterback is, running back, wide receiver, etc., and then you click B until you select the player **that they just pointed to** (usually). You literally don't have to execute a single play except one.
And then it pops. And it's 70G. And you just stare and say, "THAT was 70G??" But hey. you're not complaining, are you?