A very helpful book is: “Who’s Who in the Talmud”
“This exceptional work, with entries from Rav Abba to Rav Zutra, is an unprecedented study of every rabbi in the Talmud. The reader will find concise entries on every rabbinic personality mentioned in the Talmud, major and minor alike, and will discover such facts as their dates of birth, education, and occupation. Most entries are accompanied by a brief story about the rabbinic personality, with sources cited for easy reference.”