Invest. Grab a copy of Tony Robbins' new book Money Master the Game to begin learning that world.

Iterate. How did you make the $500? Assuming you earned it in some business-like way, find a way to repeat that and find a way to provide that service at a larger scale.

Learn. Read. A lot. The books you read now will dramatically impact the rest of your life.

Intention. I like the perspective of money as energy, and energy needs direction. Know what is important to you (which will change over time) and where you want to focus your energy (financial, emotional, physical, etc.)

Service. Another perspective I like is money as feedback for how much value you are creating in the world. See Wealth Warrior by Steve Chandler for more on that.