Making your house a home is not all about decorating. After all, how many gorgeously decorated "magazine" homes are there that don't really feel like a home? You don't need to spend a lot of money.
Surround yourself with the things that you find beautiful. You will find these things in all sorts of places - relatives basements (often a great source of furniture), yard sales, flea markets, Craigslist, and freecycle are a few.
Keep clutter under control - this is the main obsticle to having a well decorated home.
Just because it is free doesn't mean it is beautiful enough to have a place in your home.
Create your own art - can be very inexpensive & you don't even have to call yourself an artist to pull it off.