The Secretary of State s office has all the info you need. There are local offices where you can get your necessary paperwork completed without waiting for snail mail.Of course, you need to chose how to structure your business (sole proprietorship, llc, s corp). Since there is a lot of liability, I think llc and s corp are the only way to go. Don t forget business insurance.
Try this website:http://www.business.mo.gov/Good luck!
The secretary of states office.
You apply for a Tax Sales Number with the Missouri Taxing Authority
Check with the local chamber of commerce.
ask ppl around