Reading it opposite an unclothed person, Jewish or non-Jewish: Berachot 24a, 25b; Shabbat 150a
Reading it while one is unclothed, by keeping one's head beyond a divider between his head and his unclothed areas: Berachot 24b-25a, 25b; Succah 10b-11a
Reading it while unclothed, but with one's lower body submerged in clear/cloudy water: Berachot 22b, 25b
Reading it while one's foot is in contact with one's genitalia: Berachot 25b
Reading it in a "dirty" place: Berachot 24b; Rosh HaShanah 34b; Megillah 3a
Gaining a reward of long life for halting Shema while walking through a "dirty" place: Berachot 24b
Reading Shema opposite feces, if the feces is in one room and the person who is praying is in the next room: Berachot 25a; Eruvin 92b
Reading Shema near a chamber pot: Berachot 25b
What sort of covering for feces or over unclothed skin suffices to allow a person to recite Shema: Berachot 25b
Reading it while in bed with another person, or for a man to recite it while in bed with his wife: Berachot 24a
For a man to recite it while parts of a woman's body are uncovered nearby: Berachot 24a
For a man to recite it while hearing a woman's voice [kol isha]: Berachot 24a
Reading Shema while there is something dirty on one's skin: Berachot 25a
Reading Shema while one's hand is in a bathroom: Berachot 25a
Reading Shema near a pig: Berachot 25a
Considering an unclean item which is with a person in the house as though it were immediately beside him, because we consider the entire house to be a single four-cubit space: Berachot 25b
Posture while Reading
Leaning/Sitting/Standing while reading Shema: Berachot 10b, 11a
Lying on one's Back or Side: Berachot 13b; Niddah 14a
Not Travelling: Berachot 13b
General Laborers: Berachot 16a
For a Laborer Standing in different types of Trees: Berachot 16a
For a Self-Employed Laborer Standing in different types of Trees: Berachot 16a
Interruptions
Greeting, or Responding, during Shema or between paragraphs: Berachot 13a, 13b-14a
Interrupting, in Hebrew: Tos. Berachot 13a #2
Interrupting between "Elokeichem" and "Emet": Berachot 14a-b
If there was a halt of enough time that he could have finished during the interruption: Berachot 24b; Rosh HaShanah 34b
Mechanics of Reading Shema
Saying the word "Shema" twice: Succah 53b; Megillah 25a
Reading the first verse twice: Megillah 25a
Reading audibly: Berachot 13a, 15a, 15b; Megillah 17b, 19b-20a
Saying "Baruch Shem..." silently: Pesachim 56a
Reading of a Deaf person: Berachot 15a-b
Reading in Hebrew or in any Language: Berachot 13a; Megillah 17a-b
Closing/Covering one's eyes in the first verse: Berachot 13b
Sections of Shema
Number of Sections of Shema to read: Berachot 13b; Tos. Berachot 2a #1
Order of the Sections: Berachot 13a, 14b
If One Reversed the Order of the Sections: Berachot 13a, 15a; Megillah 17a-b
If One Erred in the Reading, and forgets where: Berachot 16a
Assuming that one read in his usual pattern, if he already got to a certain point in Shema: Berachot 16a
Specific Words
Care in Enunciation of Words: Berachot 15a, 15b
Reward for care in enunciation: Berachot 15b
Splitting sets of words which end and then begin with identical sounds: Berachot 15b
Separating "Yisrael" and "HaShem" in the first verse: Pesachim 55b, 56a (according to Tosafot 56a #1), Menachot 71a
Enunciation of "Echad": Berachot 13b, Pesachim 55b, 56a (according to Rashi 56a "VeLo Hayu"), Menachot 71a Mental Focus in "Echad": Berachot 13b Earning a long life for lengthening "Echad": Berachot 13b
Repeating "Emet" afterward to start "Emet VeYatziv/Ve'Emunah": Berachot 14b
Other
What happens if one is not sure whether or not he has already recited Shema: Berachot 21a
