There is a lot of information available on the internet. Here is a list of sites that may be helpful for you as a business owner:
U.S. Small Business Administration:
HG.org
American Bar Association Business Law Section:
http://www.americanbar.org/groups/business_law.html
Cornell University Law School Legal Information Institute:
https://www.law.cornell.edu/wex/corporations
Minnesota Secretary of State (business entities):
http://www.sos.state.mn.us/index.aspx?page=3
Minnesota Department of Revenue:
http://www.revenue.state.mn.us/Pages/default.aspx
California Secretary of State (business entities):
California Franchise Tax Board:
https://www.ftb.ca.gov/businesses/index.shtml?WT.mc_id=Global_Businesses_Tab
Delaware Department of State, Division of Corporations:
https://delecorp.delaware.gov/tin/GINameSearch.jsp
Delaware Annual Report and Tax