It is said by lots of people that Greek Mythology is the best of Mythologies. Some people even say that other Mythologies, such as Roman Mythology, aren't much more than cheap copies of the Greek one. On this occasion, I'll try to write a brief summary about Greek Mythology. Hope you enjoy it!
According to the Greeks, it all began when Uranus and Gaea, Sky and Earth, mated, and Gaea gave birth to the 12 Titans.. They where Hyperion, Iapetus, Coeus, Crius, Mnemosyne, Oceanus, Phoebe, Thethys, Theia, Themis, Cronus and Rhea. Once, Cronus' desire of power made him take a scythe and destroy his own father, Uranus, taking over the universe. Uranus' pieces where thrown all over the world, and Gaea was put to sleep. Cronus became the new ruler, taking Rhea as his wife. Then, other important Titans, such as Prometheus and Atlas, were born. Cronus and Rhea had 5 children (Poseidon, Hades, Hestia, Hera, and Demeter) and Cronus ate them all, afraid to be overthrown like he had his father. But Rhea hid their 6th son, Zeus, in the mountains, and gave a Stone to Cronus for him to eat. Zeus grew up and he gave venom to his father in his food, so he vomited Zeus' siblings. Together, and with Prometheus help, they fought and defeated the Titans, throwing them into Tartarus as a punishment. They divided the World, Zeus got the skies and became the King of the Gods, Hades got the Underworld, and Poseidon got the seas. Hera became Zeus wife and Queen, Hestia, the goddess of Home, and Demeter, the goddess of agriculture. A new age began.
Some say it was Zeus, some say it was Prometheus, but man was created similar to the gods. Zeus didn't want to let men prosper, afraid he'd also be overthrown. Still, Prometheus gave men Fire, and with it, the ability to prosper. As a punishment for disobeying him, Zeus decided to tie him to a rock, and every day an eagle came and ate his liver. Since Prometheus was a Titan, his liver grew back again to be devoured the next day.
From this point on, Greek mythology is an interesting novel about how the gods messed with men and the other way around. Most of Greek Mythology's problems were generated by the fact that Zeus couldn't keep it in his pants! He went from here to there having sex with women, animals and goddesses. This never generated something good. Whether it was Hera's wrath trying to destroy Zeus' offspring's life, or the Demigod's (son of a god and a mortal) desire to prove his worth, men suffered a lot from Zeus miss behaviors. Examples of Demigod Myths are the ones about Heracles and Perseus (Zeus and a mortal's sons). Also, some problems were generated by mortals who offended the gods. As an example, we have Medusa. She was a BEAUTIFUL woman who dared to say she was even prettier than Aphrodite, goddess of beauty, and as a punishment she became a gorgon, which is a snakelike monster. Also, some say the whole Trojan War was generated from the Judgement of Paris, when a man had to decide which was the best goddess (Athenea, Aphrodite and Hera).