IRS
http://www.irs.gov/
New Jersey State about starting a business
http://www.state.nj.us/njbusiness/starting/
N.J. Division of Taxation
http://www.state.nj.us/treasury/taxation/
U.S. Small Business Administration strategies for growth
http://sba.gov/strategiesforgrowth/
New York State Department of Taxation and Finance
https://www.tax.ny.gov/