Lets look at the interface first.
As you can see from above, the interface is in a classic 4 panel configuration but any viewpoint can be maximized by double clicking on its title bar. On the left are the create buttons and along the top are the general use buttons for opening menus and rendering etc. The World browser is where all you objects are listed and they can be moved around within the browser and added or moved to different layers. The layers can be hidden or selected as one item, very handy for adding mass vegetation. Items can be double clicked to bring up their properties or right clicked to bring up a multi-choice menu.