I've had books on Photoshop and Layers and photography all over the house for a while now. Sometimes I read sections of the books, but I don't start at the beginning and work my way all the way through. That's not my learning style.
Even with the videos on Kelby Training, I'm not working my way through them one section at a time. I'll skip some sections and play others several times.
It's working. I'm putting an amazing amount of information into my brain about settings inside Photoshop and Lightroom. Many of the things that used to give me trouble are now things that I understand. The building blocks are getting larger and I'm putting more and more of them together to work with images.
It feels really good.