Oprah Winfrey's advice to young superstars of any kind who are making more money than they'd ever seen: make sure you personally sign every check that goes out. I'm sure that was a lot of work for her but it kept her aware of where her money was going.
A lot of people who have lucrative successes at an early age act like lottery winners. I despair at the discussions I read on other boards about "what I'd do if I won the lottery". (Funny I haven't seen that topic here.) When you've accumulated money slowly over decades, with a few market crashes thrown in and taxes paid on some along the way and you end up with a lottery-winning size pile, you're darned careful where it goes.
Like the others, I'm also glad that the NBA is trying to teach their younger athletes about money management. Too many of them probably got off to a bad start by being pushed from grade to grade through HS and then into a non-demanding major in college and they have a lot of catching up to do.