Practical rules for utensils – new, used, and public

Rabbi, can you please clarify the practical rules for utensils? When buying a new pot, pan, knife, cup, or appliance, how do I know if it needs tevilah, a berachah, kashering, or nothing? Does the material matter? Also, what are the rules for using utensils from...

Minor fasts – practical psak

Rabbi, I want to make sure I understand your position practically, not only theoretically. According to your explanation of Rosh Hashanah 18b, today qualifies as a time of “shalom,” and therefore the minor fasts should no longer have the status they had...