Scott Nelson explains Zoroastrianism
The Amesha Spenta or the Divine Attributes of God
Here is a very good commentary on the teachings of Zarathustra and the Divine Attributes
of Ahura Mazda by Scott Nelson who is an instructor on comparative religions & philosophy.
A must see for all followers of Zarathustra and all students of religion.
Happiness unto you
Rusi Sorabji