Vigyan Bhairav is a unique scripture of Kashmiri Shaivism. Only a Yogi or an intellectual can provide the essence of it. The gist of this book is that all this is consciousness and has arisen from consciousness.
Dive deep into consciousness through meditation so that every particle of your being is awakened in consciousness. This is the main essence of it. Just realize this!
Sri Sri Ravi Shankar of Art of Living explained it during a Satsang with his disciples.