Dublin Entrepreneurial Center offers free Professional Small Business Advice (including legal advice) every Thursday, as well as ad hoc events on specific topics.
The Ohio State Bar Association offers a “Legal Basics for Small Business” handbook, here: https://www.ohiobar.org/ForPublic/Pages/StaticPage-86.aspx
Of course, if your legal concerns have nothing to do with starting a business, the list of available resources is much longer. Here are several good resource lists that are far broader than business concerns, some resources they post to are free, some depend upon income to qualify for free or sliding scale fees:
https://www.columbuslegalaid.org/ (see also http://www.ohiolegalaid.org/pro-bono/ for state-wide listings)
http://www.wright-llc.com/Free-Legal-Services.shtml
http://cap4kids.org/columbus/legal-services/general-legal-help/