Well, it is a hard read, but in short - it offers a curious interpretation of your personal experience of the world, suggesting that you are the only being, reality is manufactured by you (or in other words, you and reality are the same thing), that mind is something external to you, that you were not born but rather you were and the idea of you being born was a construct that you conjured later. Also, the living state you take for granted is only maintained and recreated every moment by memory and is compared to a dream and you are encouraged to "wake up" a second time.
You should listen to the linked video for a better introduction.
