You will need to establish the legal structure for your business, such as a C Corporation, S Corporation, or a Limited Liability Company. This will depend on the individuals involved in your business, tax implications, and liability risks. Once you have decided on the legal structure that is best for you, you will need to register your business in the jurisdiction of your choice. This could be where you live, or where you want your business to operate. This will include filling out some paperwork and paying a registration fee. It is important to remember that this registration will need to be renewed yearly.