You just need to pay 60€ or so for a business license and off you go. A GmbH (a corporate structure with limited liability, somewhere between an LLC and Corp) i

You just need to pay 60€ or so for a business license and off you go. A GmbH (a corporate structure with limited liability, somewhere between an LLC and Corp) is not needed if you want to start a) now and b) for almost zero cost.