International Business Information: How to Find it, How to Use it (ALEXANDER, CAMDEN, DANA, CARR HF 54.5 .P33) by Pagell and Halperin is an excellent guide to information resources in print and online.
The very best Website for international business resources is probably globalEDGE (Michigan State University). Other good sites are:
And then there are some slightly dated 100 Best Twitter Feeds to Follow for International Business.