Momoms,
Pittsburgh has repeatedly topped the list of America's most livable cities(http://www.forbes.com/2010/04/29/cities-livable-pittsburgh-lifestyle-real-estate-top-ten-jobs-crime-income.html). It is also one of the cheapest places to live. The city is a melting pot of cultures and is packed with endless activities. The region gets all four seasons, ranging in temperature from high 90s during the middle of summer to low teens in the winter.
For more information, I would suggest visiting http://www.visitpittsburgh.com/relocation/
Living alone is definitely going to cost a significant amount. I would expect a studio apartment to cost about $1000 per month. If you pick up roommates you could pay as little as $400-$700 per month, depending on whether you live in a house or apartment.
Honestly, money is not a problem in Pittsburgh. I believe most live quite comfortably on about 2000 per month.