This is something I was super skeptical about, but it had been suggested to me a few times. I did not make any videos about my first book, "Jagged Mind", but I decided to make a little teaser, promo video for my upcoming fantasy book. I posted it on my social media and it did BETTER than the actual release of my previous novel. So, I made a full trailer for the new book that I'll post when the book comes out. Has anyone had success using book trailers for their books?