Professional food producers, produce in private. No washing clothes on hol hamoed. Exceptions.

Pickering fruits and preserving them on hol hamoed. Fishing on hol hamoed.

Grinding making cutting wood doing other food related activities on hol hamoed

While can take haircuts, where children. Mustache. Cutting nails.

Mitzvah to take a haircut on erev holiday. We cannot take haircuts or shave on hol hamoed. Who can.

Is melacha on hol hamoed deorayta or derabanan. Mitzvah to celebrate hol hamoed with special clothing and food.

Taanit Chalom. Simcha should be uplifting. Keeping men and women separated.

Laws of being happy on Yom tov.

Necessity of other eruvin a d permissibilaty of making them kn Holiday. The obligation to be happy on Yom Tov. Half for you and half for Hashem.

It's long realized he did not make the before eating in the morning he and cook a lot for the morning. If one realized he did not make the eruv on the 1st day of the holiday he can make the eruv on a condition that if today is holiday and tomorrow is weekday he doesn't need the eruv. and if today is weekday and tomorrow is holiday so hes making the eruv . If I cook from holiday Tisha about on purpose the food is permissible however if he did it with a trick and it's forbidden