Looking for pointers or examples of top down turnbased game

I'm about to start a new project that will be a turn based game with a topdown view. To minimize complexity, I will probably keep it completely in 2D. Very briefly, the object of the game will be to drag different objects onto a map and giving the the player information and actions in a second tab (that if clicked will hide the map).

I have looked for examples or tutorials for topdown/turnbased games, but can't seem to find any. Can anyone suggest some? Particularly I'm looking for best practices (if there are any) on setting up the board and moving things around. For the turnbased part, the best way seems a state engine although I still need to look into that. But if you can mention good reads on that, those will be very much appreciated as well.