Well, if want you want is basically several maps of both world, regions and cities, you'll probably have to look into a few tutorials. But for world and regions maps, I'd recommend Tear's "Saderan" tutorial. It's really easy to follow and is capable of producing some ultra sweet-looking realistic maps, if you practice a bit.
For city maps, it also depends on whether you want realistic or a hand-drawn look. Browse around a bit, I bet there are a handful useful tutorials on how to do a city.