The Internal Revenue Service
Downloadable tax forms and publications as well as a lot of great tax advice.
EIN Application
Here is a quick link to apply for an Employer Identification Number at the IRS' website.
Social Security Administration
Learn how the Social Security Administration can help with your retirement, medicare, disability, survivorship and other benefit questions.
Texas State Comptroller's Office
The Comptroller's website allows taxpayers to pay taxes online, download forms and applications, do independent research, and even check on new businesses that have applied for sales tax permits in Texas.
U.S. Small Business Administration
You don't need an MBA to use the SBA. This site outlines everything in plain English. The SBA site contains a wealth of information for entrepreneurs and small business owners.
U.S. Department of Commerce
A thorough overview of the Commerce Department and the organizations under its banner
Federal Consumer Information Center
Not only a catalog of free and low-cost federal publications of consumer interest, but also a wealth of information on other subjects such as product recalls, the latest scams and frauds, and more.