Hare Krsna Dear Gurudev,
    Please accept my humble obeisances at your lotus feet.

ASA - Licorice feet. AGTSP!

    All glories to Srila Prabhupada.
    All glories to Guru parampara.

    Gurudev, Thank you so much.

    You are my Sankirtan Leader. What is my duty now?

    What would be my duty, responsibility, role after Brahmin diksha for myself, ISKCON, society?

your fallen servant,
Girivaradhari-Gopal Das

HpS - ASA - Well, in some ways it is just continue on the same path you are traveling now, but with more attention. If you are wearing a brahmana's thread then you should act in such a way any neophyte or newcomer to the temple, just by imitating your behavior will be acting correctly.

Then experimenting with the altar worship of the ISKCON Temple Deities, teaching the SB etc!!!