Databases and Tutorials listed below can help with market research.
Passport GMID database
Simply Analytics contains thousands of datapoints about local economic activity.
Simply Map tutorial.
Marketline Advantage offers company and brand information and also contains international data.
Market Share Reporter - it allows you to see brand shares of a market, for example: chocolate, mobile phones, diapers, internet service providers, etc. It's culled from various business and industry news sources and covers different countries.