http://www.altium.com/training/en/training_home.cfm
http://www.altium.com/community/libraries/altium-designer-libraries/en/altium-designer-libraries_home.cfm
http://www.edatools.cz/support/altiumaddons.html
http://en.wikipedia.org/wiki/Surface-mount_technology
http://www.3dcontentcentral.com/default.aspx