OBLIGATION
What are the sources for adding the Berachos of Malchuyos, Zichronos, and Shofaros? Is this mid'Oraisa or mid'Rabanan?
Is the order of the Berachos essential? If one does not know the text of one of these Berachos, may he recite the others? May he recite Musaf at all?
May one fulfill his obligation of Musaf of Rosh Hashanah, by listening to the Chazan's repetition? With what conditions? Is this true even for one who knows how to pray on his own?
May one fulfill his obligation via the Chazzan, throughout the year? What if one did recite the Amidah, but made an error (e.g., forgot Ya'aleh v'Yavo)?
1. Halachah for Rosh Hashanah 34:1
2. Lecture for Rosh Hashanah 33,
Marei Mekomos for lecture on Rosh Hashanah 33, and at https://dafyomi.co.il/lectures/marei-rosh033.htm
THREE BERACHOS
How are the three sections of Malchuyos, Zichronos, and Shofaros, a reflection of the three basic tenets of Judaism? What other sets of three correspond to these three themes?
Was the recitation of these Berachos always limited to Musaf?
