Llc Formation Documents What Business Formation (sole Proprieter, LLC, Etc) Should I Use?

What business formation (sole proprieter, LLC, etc) should I use? - llc formation documents

My love to teach English conversation for people who have Skype in Japan has become very popular lately.

I know it is important to use a legitimate "business" but what formations? I have no employees and no liability.
1. I'm going to the tax laws of Japan, the United States?
2. Where can I begin the process of "doing right"?