have a look on this website
reiseauskunft.bahn.de/bin/query.exe/e
Although its a german website if you just type in where you going from and where to it will tell you times and from where and if you have to change, then get yourself to the train station and ask for a ticket!
In Austria the English is brill and as long as you are polite and try and know how to say please and thank you
bitta - please
danker chon - thank you
they will be v helpfull, before you leave get a map of the city you are entering and the address of where you staying and work out how you will get there, see if there is a tram of bus stop near by, even ask the hotel for directions
you will be fine! navagating Austria should not be daunting