Hi,i'm planning to move to Vienna this Summer for some months (wich may extend to a gap year) and i need some tips on general cost of living, housing,volunteering/job opportunities,and german learning courses,preferably within the 1st district.I have already lived in Belgium so i understand most of the expatriates'chalenges, but still would like to know more about life in Vienna and how to better prepare my stay, since i have no contacts in the city except for some ocasional"friends of friends". Also, travelling as a single female,i would like to know the risks of staying in Vienna by myself, since i found Belgium safe enough to walk the streets alone and drove my bicycle often at night without any problems. Thank you