The list below is not extensive, but will serve as a reminder of everything you need to do before opening doors. (Source: http://www.smetoolkit.org)
Business owners are advised not to sign any legal documents unless they have a thorough understanding of the content and the subsequent consequences of their actions i.e. a thorough understanding of the legal repercussions.
If you can’t afford good legal counsel, approach the law schools at your local university.
Don’t be penny wise and pound foolish. Rather pay for good quality advice and have peace of mind. This is especially so when partners are involved.