Business.gov is the "Official Link to the U.S Government".  This Web site is an excellent resource for the start-up business. 

The site has many helpful areas including:

1.  Business Resource Library – contains information on a variety of regulatory topics including taxes, managing and hiring employees and intellectual property;

2.  Government forms search – by agency, form number or name;

3.  State Compliance Resources – which might be particularly helpful if you are doing business in more than one state;

4.  Links to the Small Business Business Administration – includes links to planning, starting, managing and exiting a business.