Short answers, pulled from the story.
The name Aphrodite means risen from the foam, a title derived from the ancient Greek word for sea-foam, yet modern scholars largely reject this as a folk etymology. The goddess's name is generally accepted to likely be of Semitic origin, due to the believed Near Eastern origins of Aphrodite's worship, but its exact derivation cannot be determined with confidence.
Her main cult centers were Cythera, Cyprus, Corinth, and Athens, and her main festival was the Aphrodisia, which was celebrated annually in midsummer. In Sparta, Aphrodite was worshipped as Aphrodite Areia, the warlike goddess, and in Athens, she was known as Aphrodite en kēpois, Aphrodite of the Gardens.
Aphrodite promised Paris that, if he were to choose her as the fairest, she would let him marry the most beautiful woman on earth, Helen, who was already married to King Menelaus of Sparta. As a result of her actions, Aphrodite caused the War of Troy in order to take Priam's kingdom and pass it down to her descendants.
Aphrodite was frequently unfaithful to her husband Hephaestus and had many lovers, including the god of war Ares, with whom she was caught in the act of adultery in the Odyssey. She also fell in love with the mortal shepherd Anchises, who became the father of the demigod Aeneas.
Adonis was the son of Myrrha, who was cursed by Aphrodite with insatiable lust for her own father, King Cinyras of Cyprus, and eventually transformed into a myrrh tree. Aphrodite found the baby and took him to the underworld to be fostered by Persephone, but Zeus decreed that Adonis would spend one third of the year with Aphrodite, one third with Persephone, and one third with whomever he chose.