Question: What is a man’s basic obligation of Talmud Torah?

Short Answer: The basic obligation is to be “kovei’a itim” (to designate time) to learn Torah every morning and evening. Ideally, one should learn every free second.

Question: What are the parameters for a Yisachar-Zevulun deal?

Short Answer: Rav Moshe Feinstein zt”l held that the deal must be a true 50-50%, and that Yisachar must be a mature talmid chacham already. He also lists further requirements, as listed herein.

Question: Do we change the language of bitul chametz when it is performed on Shabbos?

Short Answer: Most poskim hold that the language of bitul chametz always stays the same, and the word hefker is still included when the bitul is performed on Shabbos.