Thanks for playing, and I'm delighted to hear you are enjoying it! When it comes to the map, the only bit that can impact the game is the suit of the card that represents the area you are currently in. Aside from that, the map is just a (hopefully) fun exercise, so you can place cards however you want.
I like to place the cards so that just the corners overlap because it gives me the space to put sketches on them, like in the image below. I’ve also seen folks:
- Place the cards edge-to-edge, letting them overlap wholly when necessary and blaming the chaos that comes from that on the shifting of the Library.
- Ignore the card placement rules and just create a “Library area” pile with the current area at the top so they know the suit if there is a Complication to deal with.