Almanacs & Fact Books

Almanacs

http://www.libraryspot.com/almanacs.htm - links to Guinness World, Computer Almanac, Baseball Almanac, Old Farmer’s Almanac, etc.

The World Fact Book

https://www.cia.gov/library/publications/the-world-factbook/index.html - profiles of countries of the world.

Cultural Profiles

http://www.cp-pc.ca/ - each cultural profile provides an overview of life and customs in the profiled country. While the profile provides insight into some customs, it does not cover all facets of life, and the customs described may not apply in equal measure to all newcomers from the profiled country.

Dictionaries, Thesaurus & Quotations 

Bartleby

http://www.bartleby.com/ - access to a number of reference sources, literature and verse.

Hyperdictionary

http://www.hyperdictionary.com/ - access to several dictionaries as well as thesaurus.

Your Dictionary

http://www.yourdictionary.com/  - specialized, free online English dictionary which gives you definitions, thesaurus entries, spelling, pronunciation, and etymology results for your word and much more.