The Book of Enoch is a fascinating ancient text that tells the story of a man named Enoch, who was taken up to heaven and shown divine secrets. One of the most significant parts of the book is the story of the fallen angels, who rebelled against God and came to earth to teach forbidden knowledge to humans. Here is a comprehensive guide to each of the fallen angels and the sins they taught man:

1. Azazel: Azazel is the leader of the fallen angels and is described as a powerful and terrifying being. He taught humans how to make weapons of war, such as swords and shields.
2. Shemhazai: Shemhazai is the second in command of the fallen angels and is described as having great knowledge and wisdom. He taught humans the art of making jewelry and cosmetics, which were considered forbidden knowledge.
3. Armaros: Armaros is described as a being of immense power and intelligence. He taught humans the art of enchantments and spells, which were used to control and manipulate others.
4. Baraqel: Baraqel is described as a being of great strength and endurance. He taught humans astrology, which was considered a forbidden practice because it was seen as an attempt to know the mind of God.
5. Kokabiel: Kokabiel is described as a being of great beauty and charm. He taught humans the art of divination, which was considered a forbidden practice because it was seen as an attempt to know the future.
6. Penemue: Penemue is described as a being of great intelligence and cunning. He taught humans the art of writing and reading, which was considered forbidden knowledge because it gave humans the power to communicate and record their thoughts.
7. Samyaza: Samyaza is described as a being of great strength and charisma. He was the leader of the Watchers, who descended to earth and had sexual relations with human women, producing hybrid offspring known as the Nephilim.
8. Tamiel: Tamiel is described as a being of great wisdom and understanding. He taught humans the art of magic and was considered a master of the dark arts.

The sins of the fallen angels are many and varied, but they all share a common theme of forbidden knowledge and the attempt to usurp the power of God. The Book of Enoch warns of the dangers of following these fallen angels and teaches that the only way to find true wisdom and understanding is to follow the teachings of God.

It is important to note that the Book of Enoch is not considered to be part of the canon of the Bible by most Christians, but in my opinion – its teachings should be read by everyone – everywhere.