University of Virginia, Department of Materials Science and Engineering
MSE 2090: Introduction to the Science and Engineering of Materials
Fall 2010 MSE 2090 - Section 1, Monday and Wednesday, 08:30 - 9:45 am, Olsson Hall 009

Periodic Table and more by WebElements
"Internet Microscope" by Manchester Materials Science Centre, UK
Guide to Phase Diagrams with self-assessment quizes and glossary by Adam Warren from the University of Southampton, UK.
More links will be added.