Some of the links allow students to take interest assessments and other investigative assessments. Most sites provide reports that are free. Some provide more complete reports for which they charge a fee.
One of the most helpful sites is the bls.gov site, which is the Occupational Outlook Handbook in an on-line version. This is a huge, expensive book in hard copy. The on-line vesion is very user friendly and helpful to those who are seeking general information about specific careers and career areas.