If you already have your own video clips to play with, the example setups in the Templates menu is a quick way to get up and running with basic playback.
Or to start with something a little more advanced, check out the DMX controlled two channel mixer template or four channel mixer example.
Step 1: In the Templates menu, select the 'Simple Player' option.
Tip: For an example template with two layers and fading between clips choose the 'Simple Mixer' template.