Thanks for playing and the feedback.
We had more planned for the resources, but ran out of time, and some of them just didn't work out. We will need to revisit them and try to make them feel more important and more connected to their towers/upgrades.
For the controllers and keyboard we added a cursor you can move to select towers similar to using a mouse. You have to toggle it on when you want to use it by pressing T on the keyboard or RB on an XBox controller. Then you can move it like you do when placing the towers. Press E on keyboard or X on an XBox controller to select the tower. I wanted to add a tutorial for it, but didn't quite get to it. I'll add some notes to the game page for now.
I can see your point on the layout. We are used to a left to right progression, but really should have put the town on the map so you knew where to protect.