Rabbi Avrohom Baruch Zachariash teaches the halachas of the Three Weeks with the Mishnah Berurah (O.C. 551).
0:00:15 551:6 Wearing, buying, and making new clothes
0:13:00 Do you have to take linen when travelling during the 9 days
0:15:20 Forbidden to have meat or wine from Rosh Chodesh Av
0:22:30 How many people can be invited to a seudas mitzvah during the 9 days
0:27:20 Forbidden for an adult to cut a child’s hair – how about an “Upshirin”?
0:32:28 Permitted to wash children’s clothing
0:40:44 Anointing and washing on Yom Kippur