A resource page for web sites and other learning information useful for Czech/Slovak language:

Czech/English & English/Czech Dictionary/Slovnik:

http://www.slovnik.cz/

http://www.seznam.cz/ - Click on the Slovnik tab

General Czech Language Sites:

James Naughton - http://users.ox.ac.uk/~tayl0010/index.html

Step by Step - http://czechstepbystep.cz/

Czech Primer - http://www.czechprimer.org/