Professional photographer and Nikon shooter Joe McNally takes you through some fundamental basics in recognizing light scenarios and how to use flash photography.
Nikon is just starting to release new videos like this on a biweekly basis on their YouTube channel.
See also Taking Advantage Of Magic Hour
Access more videos like this in the the huge Icon Photography School Photography Video library. IPS students can access it via the student workspace. (Icon Photography School students only) If you're not a student you can signup here.