Shiur from Rabbi Elimelech Kohn Ztl on פרשת החודש. 
Discussed: 

What is the message in the fact the first Miztva Hashem gave to Klal Yisroel was Kiddush Hachodesh? 
Why was Moshe so concerned about what the Egyptian Astrologers thought? 
The underlying message in the Pirkie D'Reb Eilezer that no part of the Ram from Akedes Yitzchock went to waste, and the principle of the 'conservation of spiritual energy'.