Here are just a few of the many web sites relevant to Economics:
Economics Guide from UC Santa Barbara
A good overview of economics resources. Not all listings are free or available to non-UCSB students, BUT it does have good listings for Working Papers, Statistics, and Economic Data Sources.
"This glossary will eventually attempt to cover all of the terms and concepts from international economics, including both international trade and international finance, at least at the introductory level." --Website