ABOUT LEARNING/Theories
http://www.funderstanding.com/about_learning.cfm
How do people learn?

Bigchalk: Assessment
http://www.bigchalk.com/cgi-bin/WebObjects/WOPortal.woa/23/wa/BCPageDA/pg~LearningStyle

Explorations in Learning & Instruction: the theory into practice database
http://tip.psychology.org
This web site provides a database of fifty major theories on human learning and instruction. Listed with the name of the originator, each theory contains a concise overview, scope and applications notes, examples, principles and references.