So if anyone knows any cheap places to stay
I would recommend finding a place straight away.
Krakow is a student city, they will take everything, so the sooner you find a place, the better.
I don't know how good your Polish is (you must learn the language) but try gumtree.pl for places to stay.
or any jobs thats going
That all depends on what you're willing to do.( said the bishop to the prostitute).
Depending on what education you have and what languages you speak means a great deal about what you can do here.
Do a recognised teaching English course before you come, I don't know what they are these days but there is loads of info on that type of thing on this site.
Best of luck.