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This website from the Financial Industry Regulatory Authority (FINRA) provides sources to "Protect Yourself," "Smart Investing," and "Market Data," as well as Alerts and Resources for different investment vehicles.
This organization "make markets for consumer financial products and services work for Americans — whether they are applying for a mortgage, choosing among credit cards, or using any number of other consumer financial products."
This site from the U.S. Government "is dedicated to teaching all Americans the basics about financial education." It is organized using five building blocks for managing money: Earn, Borrow, Save & Invest, Spend, and Protect. There are also a range of tools such as calculators and interactive worksheets.