Sichat Malachei HaSharet
שיחת מלאכי השרת

Authored by Rabbi Tzadok haKohen Rabinowitz of Lublin translated into English by Rabbi Peretz and Rabbi Passon of the Kabbalistic Yeshiva Nefesh HaChaim

first, of three volumes, this ebook contains the first 2 chapters of the original book translated to English a little under 200 pages