Through the Securities and Exchange Commission database EDGAR you can search company filings such as annual reports. Search by company name, Ticker symbol or CIK (central index key). Use EDGAR's guides to help you.
Through American FactFinder, try either an advanced search or guided search the US Census' datasets such as Economic Census, County Business Patterns, American Community Survey (ACS), Annual Survey of Manufacturers, Survey of Business Owners or Non-employer Statistics to learn about a business and industry. See also the Census' FAQ's.
Through the Bureau of Labor Statistics, you can get key information on occupations, pay and benefits, inflation and prices, consumer spending, employment and unemployment.
With a library card from Los Angeles Public Library (or most public libraries in the United States), in addition to checking out e-books and e-audiobooks, you can check out magazines using Overdrive. You can then read these magazines using a computer or tablet. Here is an example of some business/finance magazines that are available.
