A series of tutorials and tips on B&W post-processing 

Question: "Why Black and White (B&W) photography?"
My answer is best provided by this excerpt from the web ...

"(B&W) allows you to focus on form, texture, shape and composition. It embraces simplicity, creates mood, and removes distractions caused by color."

Some say it is timeless and can clearly defines the subject. "B&W introduces something we don't see every day ... a world (a scene or subject) without color many times (can) create emotion better than color".

Resources and study ...

Masters of B&W
The Best B&W Photo Tips - MasterClass

B&W Resources
Anthony Morganti - Using Luminar's B&W Conversion 
How to Produce Your Own Dynamic by Photzy
How to Determine if an Image Should be - Black and White or Color