Eating before reciting the nightly Shema: Tos. Berachot 2b #3, 4b #1 Learning Torah before saying Shema: Berachot 4b
Saying Shema on time is greater than Learning Torah: Berachot 10b
General activities before Shema: Berachot 4b
Definition of "Unavoidable Circumstances" which permissibly cause one to miss the Extra Fence which the Rabbis instituted, of reciting Shema before Midnight: Rosh Berachot 1:9
Morning
Earliest time: Berachot 8b-9a, 9b
Latest time: Berachot 9b, 10b, 25b
Determining whether the time has begun: Berachot 3a, 9b
System of checking between Techelet-Dye and a White color: Berachot 9b [Rashi, Tos.]; Menachot 43b
The Best time, and the practice of the Vatikin: Berachot 9b, 25b, 26a; Tos. Berachot 9b #3
Saying Shema before Sunrise: Tos. Berachot 9a #1
Saying Shema after the Time: Tos. Berachot 8b #4
Shema before the Time and mentioning the Departure from Egypt: Berachot 13b
Evening
Learning, and other activities, before Reciting Shema: Rosh Berachot 1:9
Whether the Time is the time when people go to sleep, or when they are sleeping: Berachot 4a-b
Start of the Time: Berachot 2a, 2b, 3a, Rosh Berachot 1:1
End of the Time: Berachot 2a, 8b-9a, 9b, Rosh Berachot 1:9
Saying it after the Time: Berachot 9b
Rabbinic Institution of Recitation before Midnight, to prevent missing the Time: Berachot 2a
Making the Blessings, if one is saying Shema outside its appropriate Time: Rosh Berachot 1:1
Reciting Shema on time Vs. Having a Quorum: Rosh Berachot 1:1
Repeating Shema to make the right Time: Rosh Berachot 1:1
