Czech.cz
Tells you everything you need to know about Czech visa regulations.
http://www.czech.cz/index.php?section=1&menu=141

Czech.cz Spotlights
Details Czech border posts and crossings to neighbouring countries.
http://www.czech.cz/index.php?section=1&menu=162

International Students Club
A brief note on obtaining a student visa.
http://www.isc.mk.cvut.cz/newisc/index.php?sub=54

Ministry of Foreign Affairs
Contains official information about work permits, employment for foreigners in the country and visas in general.
http://www.mzv.cz/

Radio Praha
Information on obtaining a residence visa for the Czech republic.
http://www.radio.cz/en/html/citizen.html

The Prague Post
Find out more about visas of various types as well as residence and work permits.
http://www.praguepost.com/P03/Vinfo/