Welcome to the Warhammer forums....a place of grim and perilous posts.
If you can imagine medieval Europe, then you have the general gist of the world.
Most people are poor and cannot read. Life is miserable for most....remember that is usually the reason players become adventurers.
The document in this linkhttp://www.warpstone.org/pdfs/articles/WFRP%20Information%20Booklet.pdf
does a fantastic job getting new players into the spirit of the game. There are a number of other documents from this site that are great.
Remember the greatest strength of this game is the background material.