What should an ancient old non-mathematical fossil do when trying to understand GR? I'm reading "Gravity" by Shutz, no problem so far, but understand I need to up my game. What do you all recommend? Note: by non-mathematical, I'm not up to speed in tensors, get most of what else there is. What's next without blowing me out of the water. Note(2), anyone wanting to know practical knowledge of the physics of sound in water in regard to tactical usages, let me know.