Almost forgot I was playing this game.
Tell me guys, how hard is to learn a language like Croation, Serbian or Bosnian?
If you never had any exposure to slavic languages it might me difficult, because of the complicated grammar and the fact nobody actually speaks the "official" lagnuage you would actually learn except in the evening news so diallects vary quite allot from region to region, your best bet of leagning it properly is by living here ( like any language ).
@Corwin: yes if you live here it's much easier, i met a Korean woman that lives here in Zagreb for 15 years and she still struggles in some parts because of the ever changing language due to slang and street talk.
The messed up part is there are no rules for some gramatical nonsense, you just have to realise what "sounds right" you can't use your usual grammar rules because they don't apply.
If you do on the other hand, you will have a great time once you learn it and the sware words are the best in these languages, if you learn Croatian you open yourself to around 20mil. people that speak the similar language. So good luck if you wish to learn it, I say go for it!