This course is designed as a self-paced course that teaches the structure of the calendar that couples keep as part of the mitzvah of Taharat Hamishpacha. Based on the teachings of Chabad Custom, and approved by Rabbonim from the Chabad Community, it addresses the oft misunderstood issues of keeping the calendar incumbent on married couples. Even though the online apps are so tempting, it seems tantamount to running your intimate life by a GPS. There are many times when keeping a physical calendar is imperative, even when using the online apps. It is super clear, and can only lead to more simcha while keeping this mitzvah. The course is available for one year from the date you signed up for it. Any questions that you personally have should be addressed to your Rav who is competent in this area of Halacha.