What do you know about Mahayana Buddhist monks and nuns, and in general monastic life

I have a very important project and I'd really appreciate your help. You can recommend a website if you wish!
I'm really looking for something substantial that i can include in my assignment...

do they get money and food from society?

Depends on the sect, some are pretty much the same as Theravada (Buddhism 1.0), others are different. Each difference would fill volumes. Plus in my sect there are no monks.

I meet a Buddhist monk the other day from Nepal, he was one as a child. He said the worked him hard and didn't feed him enough

Not quite sure what you want to know about Mahayana monks, but perhaps you could start at http://viewonbuddhism.org for starters?