"don't know what are the implications." [sic] You should inform yourself. In the US, Nolo[1] is a good place to start. So is BusinessUSA[2]. After that, you s

"don't know what are the implications." [sic] You should inform yourself. In the US, Nolo[1] is a good place to start. So is BusinessUSA[2]. After that, you should find out the laws regarding running a business in your state, running a business in your county/parish, and running a business in your city/locality. Depending on your business structure, all four may have different requirements, forms, licenses, fees, filing dates, taxes (fed, state, county, city), etc. It's not an insurmountable amount of work to handle on your own, especially if you choose a simple structure like a sole proprietorship or LLC, but you should do your homework before you jump in and contact a professional with any concerns you have. Also, you should talk to a lawyer if you are worried about liability. The suggestion from some commenters that you are separated from liability if you run an LLC or other partnership is inaccurate. Liability is limited, but you can still be sued personally for fraud, negligence, and a host of other sins. -- [1] http://www.nolo.com/legal-encyclopedia/llc-corporations-partnerships http://www.nolo.com/legal-encyclopedia/llc-corporations-part... [2] http://business.usa.gov/ http://business.usa.gov/