A short tutorial that gives a few considerations for those making their own maps:
Worldbuilding By Map - Fantastic Maps
Worldbuilding By Map - Fantastic Maps
I try to create my maps in photoshop from the start instead, it feels like drawing your map makes it a lot more difficult to edit and fix things if you need to change them as the story progresses. The problem though might be that it may not be as good looking as a well drawn map. But I suppose if your book becomes good enough to sell you could hire an artist to draw based out of the map you made in photoshop?
I don't understand. Pencil and paper makes for the easiest way to change something, literally a few hand movements and voilà . The biggest issue with a pencil-and-paper map is that scaling is pretty hard to do (unless you use graph paper)
Well it kind of depends how good you draw, and what tools/brushes you can use in photoshop. As you work with layers you can simply delete, add or move say a mountain, a lake or a forest - I'd say that's quicker than erasing what you already done and then remodeling it? Especially if you are working with colors later on as well.