Wells Aluminum's web site has an aluminum primer listing the advantages of using aluminum, extrusion, case histories and design ideas. For a challenge, there is a Design Ideas puzzle where visitors to the site can guess what the extruded shapes are. Check the site out at www.wells-aluminum.com.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.