I'd like to emulate soft immersive studio lighting. But, when I tried searching for that, I didn't find those results. What's the best CG course that will go over this?
An HDRI with soft light studio set up should get the job done, for product showcasing. Lighting is a whole art in itself, so there's both lighting Fundamentals to watch:
https://cgcookie.com/courses/core-fundamentals-of-lighting-in-blender
https://cgcookie.com/courses/fundamentals-of-digital-lighting-in-blender
And the Sessions tutorials make good use of lighting: