Since it took me a bit to understand how the Nikon CLS system worked, I think it could be of some use for those willing to master this powerful tool to watch these videos
The "Commander" use is for me the #1 choice both when I'm indoor and outdoor, especially when using the SB600 or the SB800, very reliable and powerful units. You can trigger your flashes either with the pop up flash of your Nikon or using the SU800 commander. The important thing is that the receiver, which normally is on the lower right end of your flash, can actually see the light from the pop up or receive the infrared signal from the SU800.
These videos are not new, they've been out for a while, as well as the CLS, but they are still of much use.