You can ‘only’ see one floor at a time in 3D at this moment. We’re working on a way to visualize multiple floors, but this is going to take a while.

Is there a way to at least get the land marks to show? I am trying to set the stairs etc to build the second floor.

best thing to do is duplicate your design of the first floor from one floor to the other and use it as a basis. you can mark the garden edges and such for instance with lines and delete the garden surface afterwards. I made an example: http://beta.floorplanner.com/projects/18124528