Хвала Vlacko! You are right, I'm only a beginer in serbian. There is a strong fraud in similarity of russian and serbian. And it's a trap for me
If I want to say something in serbian and I don't know how it to do I use russian words remaking them in serbian style and sometimes grammar That is why I need a good lernbook of serbian and OF COURSE help of native serbian sreakers as you. So I guess you will not be angry if I would do some mistakes

Још пут хвала!