What is self? Buddhist teachings about self and no self

Hardest to understand but central of religion.
Fully perceiving the nature of the self is one way to define enlightenment.
An individual is the combination of Five skandhas:
Form
Sensation
Perception
Mental formations
Consciousness
First: physical form
Second: feelings
Third: thinking
Forth: Habits, prejudices, desires, pride, experience.

Fifth: awareness but without conceptualization.
The self is no self.
What is most important to understand about skandhas is that they are empty
They are not qualities an individual possesses.
Ego is by product of skandhas.
More than anything, it is the difference of understanding on self defines and separates two schools.