AICPA
https://www.aicpa.org/interestareas/frc/auditattest.html
If you perform audit and attest engagements, the information and resources here will help you stay informed of changes to the standards.

Financial Accounting Standards Board
http://www.fasb.org
Home page for accounting's standards setting body, including summaries of recent exposure drafts

Public Register's Annual Report Service
http://www.prars.com/index.html
Obtain free copies of annual reports

Edgar Data Base of Corporate Information
http://www.sec.gov/edgar.shtml
Maintained by the SEC, this site allows you to download electronic filings, such as 10-K forms, submitted to the SEC, and review the financial statements of publicly held companies on your computer monitor