As I mentioned before, the Layout is used for completing your scenes. This is where you load in the objects you've created, edit lights & cameras, animate things etc. As in Modeler, you can now customize almost everything to fit your own needs...
Since we already have the objects loaded into Layout, we can now start adjusting the scene of how we want the final render to look (If you don't have the objects loaded, click the "Items" Tab at the top of Layout, select "Add -> Load Object",then browse to where you saved it and load it in)...
This is just a brief exlpantion of the different AXISsses :) OK, X is across(horizontal) and Y is up (vertical) like on a graph, Z is into/out of the screen in the front view, its forward and backwards relative to your model...