reference sites
These websites help people to find out the meanings and all information almost about anything. Students, teachers and anyone can make use of these websites and increase their knowledge. Check these best websites and get you informed of things you don’t know.

1. Wikipedia

wikipedia.org

2. Yahoo! Anwers

yahoo.com

3. Answers

answers.com

4. About

about.com

5. Wikia

wikia.com

6. eHow

ehow.com

7. Reference

reference.com

8. WikiHow

wikihow.com

9. GoogleBooks

google.com

10. HubPages

hubpages.com

11. StackExchange

stackexchange.com

12. HowStuffWorks

howstuffworks.com

13. ChaCha

chacha.com

14. InternetArchive

archive.org

15. Squidoo

squidoo.com