Occupational Outlook Handbook - Bureau of  Labor Statistics, U.S. Department of Labor
Search by categories or specific job title to learn more about the nature of the work, employment opportunities, job outlook, earnings, working conditions, and training requirements.
http://www.bls.gov/oco

Majors and Careers Central - from CollegeBoard.com
Click on "Major & Career Profiles" to browse careers by categories.
http://www.collegeboard.com/student/csearch/majors_careers/index.html

CareerZone from the New York State Department of Labor
Contains a self assessment tool, plus basic information on a wide variety of careers.  Salary and job outlook information, specifically for New York State, is listed.
http://nycareerzone.org

Your Winning Edge from New York State Dept. of Labor
Includes tips for successful interviews, resumes and cover letters.  Also has sample resumes and cover letters.
http://www.labor.ny.gov/stats/publications/winning_edge/winnedge_index.shtm

America's Career InfoNet

Trends, outlooks, wage information and educational requirements for a variety of careers.
http://www.acinet.org

MENC Career Center - The National Association for Music Education
Qualifications, training, etc. required for careers in music.
http://www.menc.org/careers

Careers in Music
http://www.kenfoster.com/Articles/Careers.htm

iSciWNY
Information on careers in the life sciences.
http://www.isciwny.com