Commercial and college classes

• Productivity Point - http://www.propoint.com
• Ikon - http://www.ikon.com/education/
• CEP - http://www.nd.edu/~cep/
• IUSB - http://www.iusb.edu/~cted/

• Ascend - http://www.ascendtraining.com/
• Allen - http://www.alleninteractions.com/

• http://www.teachyourselfbooks.com/
• http://www.barnesandnobleuniversity.com/
• http://cbt.nd.edu/
• http://macromedia.elementk.com/
• http://www.individualsoftware.com/

• http://www.microsoft.com/trainingandservices/
• http://www.mous.net/

• http://www.certmag.com/common/certprograms/

• A+ - http://www.comptia.com/
• CTT - http://www.chauncey.com/ctt.html
• CIW - http://www.ciwcertified.com/

Occupational Outlook Handbook -  http://stats.bls.gov/ocohome.htm

Online magazines

• http://www.certcities.com/
• http://www.certmag.com/
• http://www.procertmag.com