Chafetz Chaim
Mussar
The Pentateuch and Haftorahs
Chumash
Rosh HaShana and Yom Kippur
Machzor
Encyclopaedia Judaica - complete set
Reference
Talmud Kiddushin Gittin Ketubot
Benchers - Zemiros
מדרש רבה
Midrash
Chaye Adom
Halachah
Sefer Ha-Chinukh
Other
Moreh Nevukhim (Rambam)
Jewish philosophy
The Zohar
Jewish Thought
Lilmode Ul’lamed
History
Lights along the way
Inspiration