czech is fun for me
i love duolingo. i used to be horrible, but now I'm ever so much better
you probably started to 'learn' english for czech speakers. Click on the flag next to your avatar in the blue bar on top and it should give you a list of languages you are learning. Once you pick czech (for english speakers) or other language, everything should switch to English, assuming that you are taking a course that is teaching that language from English.