Explanations of the reasons for the Mitzvos, according to Chasidus. Explains the mitzvos of Tzitzit and Tefillin, prayer, belief in G-d, love of a fellow Jew, having children, building the Holy Temple, and many others.

This is a fundamental work of Chabad Chasidus. The Lubavitcher Rebbe has advised many people to begin the study of Chasidus with Derech Mitzosecha, which he always referred to as the "Book of Mitzvos", because the style and arrangement are accessible to beginners.