The following is a starter list of some useful Web sites for teachers and students of Mandarin Chinese. Once you start to search you will come across a great many more:
Online Dictionary
Search Engine
The most popular social networks
Chinese Hanban
Chinese National Office for Teaching Chinese as a Foreign Language
http://english.chinese.cn/
Language Learning and General
Pronunciation
Essential Chinese culture
http://english.chinese.cn/chineseculture/
TV
News
Host Universities
Chinese Visa Information
http://www.chinese-embassy.org.uk/eng/visa/
If you have any comments on any of these sites or suggestions for other useful sites to include, please let me know at X.tang.1@bham.ac.uk