This shiur based on the first pasuk in the parsha – discusses the importance of details.
Sources: Rash, Taz, E.Ezra, R.Bechayey, Ramban, Tur, Yalkut, Alshich, Rikanti, A Ma’amar and a Sicha – Bamidbar Sinai B’Ohel Moed B’echod L’Chodesh, B’Shana Hasheinis references to follow