Can I use this program to make maps of cities? Im looking for something with a short learning curve that can help me make maps of fantasy cities. Is this appropriate?
Sure you can, but whether it will be a good fit depends on what kind of fantasy city you're after and what your art assets are like. With Tiled you can make cities like in old school RPGs, but if you want roads and buildings at more flexible angles then it's probably not a good choice. Check out the world of Source of Tales for an example that was done with Tiled.