Let’s face it: earning money is difficult. Even at the most basic level, it requires the earner to perform a task or provide a product in exchange for compensation. At its highest level, executives who run companies that employ thousands of employees are still compensated for using their finely-honed skills to advance their company’s good or service. In either case, or any in between, the earner rightly wants to keep the money they’ve earned. Whether it takes the form of wealth management for professional athletes or smart saving for retail associates, here are good ways to invest money with little...