If you want to be able to make money by investing in real estate, focus on creating value so that you are getting more and more for the same amount of work. Do the math. If you keep increasing the monetary value of your labor, eventually you will be able to start decreasing the amount of work you are doing. You can work part-time but still collect a full-time paycheck. A nice full-time pay check too.
You need to know what sorts of experts you will need to have on hand to help you once you do buy investment property in Minnesota. For instance, you will need an accountant and a lawyer, and those are only just the basic two. You will need an agent. You will need to know architects and maybe even a property management company.