When building your slides, you will be presented with layout options like below. This sample screen will show you what those layouts look like in the published DXE, as well as demonstrate some of the options you have when constructing each slide. PLEASE NOTE that not all motion effects are demonstrated here... Looking at last year's DXE can give you some great ideas.
To navigate, click the left & right arrows on the sides of the slide, click the dots below the slide, or use your left & right arrow keys.