If you're looking to take business courses, there are a few options to consider. First, you could go to grad school or get an MBA, but that might not be necessary depending on your background and industry. Instead, consider taking a la carte courses in specific skills you want to develop, such as corporate finance, accounting, business analytics, or contract law. You can find these courses at local universities or even online, and some top business schools offer on-demand courses as well. This approach allows you to focus on the skills you need and get a higher ROI without giving up years of your life and income.