Chandra in Sahaja bhava

[Lee]

Namaskar!

I am trying to learn Vedic astrology. My point of interest is the
moon. I have the following questions:

1. How does the moon manifest its malefic nature as 6th, 8th and 12th
lord?

2. When it is lord of the dustana houses, what are its effects on the
3rd house?

3. How does the moon affect the Upapada lagna when they are in the
same house?

I hope you can shed light on these. Thank you.

Lee