Here are some sites that I really like using to expand my financial knowledge. I hope some of these will be useful for you when doing some research.
Google Finance – This is a great site to research companies, stocks, trends, mutual fund and much more.
Forbes– They have a great articles for what is going on in the business environment across the country and world.
MSN Money – I really enjoy reading their personal finance section. They tend to have really good stories that are applicable today.
Kiplinger– is a great resource to learn more about retirement and investing.