[Sainters7]

^
Shops, its just the British pound currency sign on the map (don't have that option on my keypad, I'm sure you know what I mean). Also moving carts in the Frontier have it as well. I know, they didn't do a great job showing you where they are, and there's not a lot of them.

It's actually kind of ironic given how long the starting tutorials were through all those first sequences, that one of the complaints I'm hearing in this game is they didn't explain side options enough (Homestead crafting/artisans missions, Assassin recruiting which I still haven't figured out). Took me a bit to figure out the whole crafting thing but I got er down now.