Begin on 12a. Review the Mishna and Gemara and learn until 7 lines from the bottom, Veaf Rabbi Yochanan. Focus on Rashi dh Elah midelo. Try to understand how the mitoch works according to Rashi. See Tosfos dh Hachi garsinan that brings Rashi and expand on his pshat. He asks a question on Rashi from a Gemara in Pesachim. He then proceeds to argue and explain a different pshat in the Gemara and how mitoch works.