Baruch College has put out a tutorial, Beginner's Guide to Business Research.
Bloomberg BusinessWeek: Company Insight Center
Search over 42,000 public and 322,000 private companies for stock quotes, charts, news, press releases, financials, key competitors
CorporateInformation: Company Profiles and Financial Information
Edgar Database of Corporate Information
Entrepreneur.com: Hot 100 - Fastest growing new entrepreneurial businesses in America
Executive Compensation: Special Report from Forbes
Bloomberg:Top CEO Pay Ratios
Crain's Detroit Directory and Lists
Forbes Best Places for Business and Careers
Forbes: America’s Best Big Companies
Forbes: America’s Largest Private Companies
Forbes: Global High Performers
Fortune 500 Companies - America's Most Admired Companies, 100 Best Companies to Work For, 100 Fastest Growing Companies, and more);Walsh students have access on-campus to the Fortune 500 List
Fortune 500 Companies in Michigan
Investor Network
Fuld & Company, Inc - An extensive list of resources for competitor intelligence.
Global Outsourcing 100 - The International Association of Outsourcing Professionals lists the world's top outsourcing service providers.
Hoover's Online: Capsule Company Information
Inc. 500: Annual List of the Fastest Growing U.S. Private Companies (2017)
Bizjournals.com - Company overview, news, press releases, top executives and financials
Bizjournals.com - Executive Profiles
Public Register's Annual Report Service: Selected Annual Reports, available by snail mail
SEC Info - SEC Filings and M&A Deals: Free, but registration required.
Yahoo!Finance: Annual Reports
Yahoo's Links to Company Profiles, News, and Quotes