https://www.creativelive.com/class/lighting-401-pye-jirsa-slr-lounge

One of the most common misconceptions about flash photography is that flash makes an image look unnatural. In this flash workshop, the fourth in the lighting series, Pye Jirsa, teaches photographers how to create every natural light effect with flash, including golden hour, soft window light, and direct sun. These techniques, combined with the knowledge you gained from Flash Photography Crash Course, Lighting 101, Lighting 201, and Lighting 301, give you full mastery of flash photography and full control of the light in any scene.