Zoroastrians

I did a similar post like this a While ago on a different account and asked these Questions for Jews, Hindus, and Christians. Now I wanna ask yall

Do you have a concept of "Holy war" in Zoroastrianism? And if so what's the term for it, and are there any War rules.

What's Zoroastrian clergy like? And what are the specific Tasks that your clergy are charged with?

What's Your Holy book? And what's its main message?

What are some Of the Ethics of Zoroastrianism? like what does Zoroastrianism teach is Right or wrong?

What was Zarathustra/Zoroaster like according to your religion?

What's the Importance of Fire in your temples?

Why do You always have Someone keeping the fire Going?

I heard that those who are born Into Zoroastrianism don't Accept new converts. Is that true?

What do you think of Modern day religions like Christianity, Taoism, Buddhism, Hinduism, or islam?