The sixth kind of consciousness, also called monocular consciousness, can know oneself without the first five kinds, that is, dreaming. Moreover, the sixth consciousness can feel the touch of color, sound and fragrance by itself, and then benefit from it by itself, just like having a spring dream. When there is nothing, it imagines various scenes by itself and then absorbs them by itself. There are many kinds of dreams, which are recorded in Fa Yuan Zhu Lin. I don't want you to go the wrong way when you are a beginner. You'd better learn slowly. As for the question of consciousness, we can start with a hundred schools of thought. Master Cheng Guan's "Hundred Schools of Thought" is very good and can be read.