Interpretation of Vedas

 How could one understand the true meaning of the Vedas?

Why is there so much variations amongst the commentaries of the Vedas available today?

What are different approcaches of the Vedic Interpretation since ancient times?

Kindly enumerate the main commentaries of the vedas?

What types of vedic Commentaries are available now?

What are the main characteristics of Dayanand's / and then Sri Aurobindo's Commentary?