You can basically know lucid dream:

Basic knowledge:

Reality checking is an easy lucid dreaming technique designed to increase your self-awareness by day and penetrate your dreams by night.

When combined with other lucid dream exercises, reality checks can supercharge your efforts. Or they can produce lucid dreams in their own right, simply by creating a mental habit of reality testing.

ref: 

False fake is remarkably vivid dream in which you think you’ve woken up. Only to then later realize that you were, or still are, asleep the whole time. And like dreams generally, they can range from being fairly mundane to quite distressing.

ref:

Sleep Paralysis is a bit of a misnomer because it is actually what happens when you are awake following sleep but your body is still paralyzed as it would be during REM-sleep. ref

But it can be a key to lucid dreaming and out of Body Experience. ref

How does a lucid dream end? There are 3 kinds:

  1. Slowly be puzzled by the subconscious and the dream turns into a common dream.
  2. Wake up and the dream ends because of emotional excitement or external disturbance and other reasons.
  3. End this dream and begin the next dream.

other ref:

There is a scholar called Nicholas Newport. He has a system theory of lucid dreaming.

His channel.