Microsoft's Main site

Microsoft's Certification site

MCP Magazine Online

Oracle Canada's Main site

Oracle University site

Oracle Magazines site

Computer Technology Industries Association (CompTIA)

Smart Force 

Prometric Testing

Cisco Systems

www.microsoft.com

www.microsoft.com/mcp

www.mcpmag.com

www.oracle.ca

www.oracle.ca/education

www.oracle.com/oramag/

www.comptia.org

www.smartforce.com

www.prometric.com

www.cisco.com