How to Survive in the Wizarding World

Usually a fangirl would go straight to Dumbledore upon falling into the wizarding world, right? And try not to bend rules and abuse loopholes to better herself, right? Wrong on all counts. Here's what happens when a girl just wants to live her life, save the world, and get stupidly rich along the way. Why the hell didn't Dumbledore try any of this shit? Oh yeah, wizards are stupid.