According to the book "One Unbounded Ocean Of Consciousness" by Tony Nader MD, PhD, MARR, consciousness is all there is. He looks at consciousness from the "hard science perspective of physics" and from the experiences of ancient and modern seers. Everything is observers in the process of observing, through their own consciousness, objects of observation. The objects of observation themselves being, according to physics, nothing more than energy and intelligence. It may at first seem unusual that everything is consciousness. But even the greatest of scientists have come to similar conclusions. Scientists are coming to see that "there are levels of reality" and that there is an underlying unified field, which turns out to have the qualities of consciousness
By the time you finish the book you have become consciousness observing consciousness in all its varied qualities and you grasp to a greater degree than before what the ancient seers meant when they said: "I am that. Thou art that. All this is nothing but that."
If you want to see the world in a comprehensive way, this book will take you there step by step: "One Unbounded Ocean Of Consciousness"
"Life Is Consciousness" https://www.youtube.com/watch?v=F5fD2CuHKyQ