Many users of flash feel quite comfortable with it in the studio. The studio makes things fairly straightforward. You expose to eliminate all the ambient light and then you add it back where you want it with your strobes or speedlights. But when many newer flash users struggle when they get out on location, where you can’t or don’t want to completely kill the ambient light, but need to add flash.
In this video, Jay P Morgan at The Slanted Lens looks at how to mix strobes with the ambient light and how to balance them outdoors to achieve a good exposure.