Rabbi Avrohom Baruch Zachariash teaches the halachas of Chol Hamoed with the Mishnah Berurah (O.C. 538).
1:19 How much time to set aside for a 35 minute trip?
2:58 Is forgetting an “ones”?
6:29 Obligated for “tashlum for shacharis” if he is told of death at 7 AM?
08:40 Not telling someone about the death of a relative.
20:04 Proportional losses are not always treated the same.
22:35 Choosing a safe road that takes 10 minutes longer, or the fast road.
25:35 Losses for big versus small barrels.
27:57 Saving property from thieves.
29:45 Makolets used to not be open on Chol Hamoed.
31:27 Transferring money – PayPal – on Chol Hamoed.
34:45 Beis Din can take away property of someone who worked on Chol Hamoed.