Random story of the day... During the 2011 lockout, Vince Young -- who apparently had squandered most of his money already -- took out a $300,000 loan so he could throw himself a birthday party.
I thought the NFL conducted rookie symposiums telling them to save their money.
You are correct; each summer, just prior to (or right after the beginning of) training camp, the NFL holds a rookie symposium. It's optional, unfortunately, so attendance isn't high. The biggest session of each symposium is "SAVE YOUR FUCKING MONEY."
Unfortunately, people who hit each other in the head on a regular basis tend to not be the smartest people on the face of the planet.