How easy/hard is Czech to learn?
Lesen Sie dies.
Some detail description of Czech: http://how-to-learn-any-language.com/e/languages/czech/index.html
Similarities Russian-Czech: http://how-to-learn-any-language.com/e/languages/similarities/russian/index.html
It is really difficult because of the case system, gender, and complicated writing rules and the accents isn't also as easy to acquire as it might seem And we have the impossible ř!. However, listening should be on a normal level, pronoucing written words is easy since we have exact rules and you don't have to connect words together while speaking as in English or French. And since we use latin script, it's definietly easier than Chinese and other languages. :-) So to conclude, it is hard, but if you prevail, you can do it.
I am a native Greek and I still am a beginner in Czech although I lived in the country for a few months. I was pleasantly surprised to pinpoint small similarities between the two languages although they are not linguistically related as far as I know. Such similarities were the declination of the words, the three genders, the common function of some simple words (such as prosím) and others I do not remember at the moment. I am not sure if I feel more motivated to learn or scared of the Czech language, but these small things help me keep it up! :)