BusinessUSA - a U.S. federal government site for everything related to business in the USA.
CNNMoney - business, financial, and personal finance news.
Forbes - the official website of Forbes magazine, with information on news, politics, economics, business, & finance.
Google Finance - get real-time stock quotes & charts, financial news, currency conversions, and track your portfolio.
Illinois Department of Commerce & Economic Opportunity - the official State of Illinois site for Illinois businesses.
Lake Zurich Area Chamber of Commerce - official site of the Chamber, featuring a business directory of members, events calendar, community profile, and a monthly newsletter.
NAICS - find North American Industry Classification System (NAICS) codes and information.
Small Business Administration - the official website for the U.S. Small Business Administration, providing support to small businesses across the nation.
Social Media for Small Businesses - an online guide from Expertise.com.
ThomasNet - find suppliers and source products.
Yahoo! Finance - get stock quotes, news, portfolio management resources, international market data, message boards, and mortgage rates.
XE Currency Converter - find the latest currency exchange rates and convert all major world currencies.