There was russian language in primary school. After primary, i forget almost everything. So, can someone practice with me? I know how to say Меня зовут Деян and stuff like that. :D
I took up Russian 3 months ago since I joined highschool and now I have 45 minutes' lesson twice a week. I don't know how it works for you, but I noticed that I very easily devour new Russian words and phrases (even faster than English ones) because of lots of similarities between Russian and my native language. As far as I know, Serbian also belongs to the Slavic language family, so it should be not so hard for you to learn.
Good luck, dude:)
Try to write texts directly in russian and you will get good corrections and answers from a lot of people. So first step is to introduce yourself in russian! It is easy! At the beginning you can use Google Translate to create some texts. You can also ask some help from a teacher here on the website! Good luck!