I would like to create a board that is double sided using the free version of eagle. I would like the bottom side to be an exact copy of the top side, but isolated from one another (I am not using any vias or through hole components). Each side has a connector so that it can interface with this amplifier chip (shown on page 7 http://intantech.com/files/Intan_RHD2000_eval_system.pdf ) I have a board layout of the design, but I am not sure how to go about this. Should I just copy the group with all connections in the board layout, overlap them 100% and simply label one top and one bottom? I am new to Eagle so any help is appreciated, I apologize if it is a trivial question. Thanks in advance!