The Babylonian Gemarah, however, was not compiled by any one person, nor at any one time. Rabbi Aschi began it in 327 A.D and labored over it for sixty years. He was followed by Rabbi Maremar about the year 427 A.D., and it was completed by Rabbi Abina about the year 500 A.D. The Babylonian Gemarah has thirty-six chapters of interpretations.
This twofold Gemarah, added to the Mischnah, makes also a twofold Talmud: The Jerusalem version, which, on account of its brevity and obscurity, is not much used; and the Babylonian version, which has been held in the highest esteem by Jews of all times.
The Gemarah is followed by additions called Tosephoth.(8) It was thus that Rabbi Chaia first styled his opinions on the Mischnaioth. He and Rabbi Uschaia were the first to explain this book publicly in the schools. Commentaries on the Mischnah which were made by the doctors outside the schools were called Baraietoth,(9) or extraneous opinions.
(8) From Tosepheth, or Tosiphta, meaning addition.
(9) From Baria, extraneous, or Baraietha, extraneous teaching.
These Commentaries were further supplemented by other decisions called Piske Tosephoth, short theses and simple principles.
For nearly five hundred years after the Babylonian Talmud was completed, the study of literature was greatly hampered partly due to public calamities and partly owing to dissensions among the scholars. But in the eleventh century others wrote further additions to the Talmud. Chief among these were the Tosephoth of Rabbi Ascher.
Besides these there appeared the Perusch of Rabbi Moische ben Maimon, called by the Jews Rambam for short, by the Christians Maimonides, and by Rabbi Schelomo, Iarchi or Raschi.
Thus, the Mischna, Gemarah, Tosephoth, the marginal notes of Rabbi Ascher, the Piske Tosephoth and the Perusch Hamischnaioth of Maimonides, all collected into one, constitute a vast work which is called the Talmud.
talmudunmasked.com/chapter1.htm
It will remain overwhelming forever lol welcome to catholic life…good thing is most of this stuff was hashed out for us.