First it's depends on which part of the city you want to stay. The most expensive thing about Munich is the rents. Once you have that accounted for most other things are pretty decent value. Then you can save the remaining part of your salary as saving. read more
Yes, with a conservative lifestyle it is quite possible to live in Munich with 3000€ nett. Well of course not at the centre of the city. A little outskirts should be fine. read more
Depending on if you live in a WG or get your own flat, the costs can go anywhere from a few hundred euros to several thousand. I myself paid 1500€ to the agency, another 1200€ as security, first month rent is another 580€, then 3000€ of Ikea furniture. read more