The nation thought Moshe was late from coming down the mountain and they ganged up on Aharon. Aharon said to remove the golden earings from their wives sons and daughters. Bnei yisrael took it from their ears and gave it to ahron ,ahron made it into a golden calf.
Hashem is bad
When Aharon saw Bnei yisrael dancing around the golden calf he told them tommorow will be a holiday for hashem. The next morning they woke up and ate and drank inaproprietly .
5. Moshe breaks the luchos
Hashem said to Moshe to go down from the mountain because the nation sinned and made a golden calf. Hashem said he wants to destroy them and make Moshe a new nation.
6. Bnei is punished!!!!!!!!
we are for Hashem
Moshe said not to destroy them because the Mitzrym will think bad of Hashem. And in addition you promised the avos to make bnei into a big nation .
Moshe came down from the mountain and when he saw Bnei Yisrael with the agel he smashes the luchos and melts the agel and grinds and made Bnei drink it.
Moshe goes to the head of the camp and calls who is for Hashem all of Bnei Levi come and he says to kill his friend and 3,000 fell.And the other people get punished with the plague.