Light is everything in photography, it doesn’t matter whether the source is natural or manmade, to take images for uniqueness understanding the light source is important.
F Stoppers - Expensive Light Modifiers are Overrated
Epic Softbox Shootout- Godox, Cheetah and Westcott
Best Studio Light Modifier: Softbox, Umbrella or Beauty Dish?
 Understanding Modifiers - Joe Grimes
Choosing the Right Light Modifier with Joel Grimes
Which Softbox Works For You?
8 Lighting Modifiers Explained
Why you need a Grid with your SoftboxTake and Make Great Photography - Gaven Hoey
Snoot Basics - Lighting Tutorial
Using Photography Lighting Modifiers Get the Most From Strobes and Flashes
Understanding softbox lighting modifiers and how to use them
This page is intended to help shed some light on the subject (Pun intended)
Natural Lighting
Speed Lights & Stobes
Light Modifiers
One Light set-ups
High Speed Sync