Here are some of the references I used while studying the bedtime shema: https://www.chabad.org/library/article_cdo/aid/705353/jewish/The-Shema.htm https://www.chabad.org/library/article_cdo/aid/282822/jewish/Transliteration.htm https://www.chabad.org/library/article_cdo/aid/3217789/jewish/Shema-with-Zalman-Goldstein.htm https://www.chabad.org/library/article_cdo/aid/3217840/jewish/Translation.htm https://www.chabad.org/library/article_cdo/aid/5736576/jewish/Shema-with-Dovid-Hurwitz.htm https://www.chabad.org/library/article_cdo/aid/5736584/jewish/VaYomer.htm https://www.sefaria.org/sheets/150213?lang=bi