Yep. You have it mostly, this set of tutorials should get you the rest of the way.
I created schematic with this Inkscape plugin
which creates this part:
edit: Added a silkscreen of the board layout and mounting holes. Note as usual if you want mounting holes drilled, you need to drag a hole object from core parts in to the sketch and size it to match the hole you want. By default no holes will be drilled. There are no connectors in pcb as the board connections are screw terminals. Drag a header connector (single pin or 3 pin ) to the position of your choice in the sketch to give connecting points for wires from the screw terminals if you wish to connect them to the board.
edit2: Replaced breadboard with an improved version, if you have previously downloaded this part please download it again to get the new version.