"IMHO the best secondary source on classic mythology; by Roman emperor Claudius the Stutterer's (fictional) biographer ("I, Claudius;" "Claudius the God"): Well-written, informative and comprehensive."
"The 2 best-known works associated with Homer in an acclaimed new translation: the 10-year Trojan War & the Trojan horse creator's 20-year-journey home. (Both originally transmitted only orally, too.)"
"By the father of the Greek tragedy: Sacrifice, murder and revenge at the beginning and the end of the Trojan War in king Agamemnon's house, but new civilization arises under Athena's guidance at last."
"Aeschylus on Prometheus (fire for humanity, torture ever after); Danaus's 50 daughters in Argos ("The Suppliants"); patricide & incest ("7 Against Thebes"); and the battle of Salamis ("The Persians")."
"No mythology, but a popular favorite practically ever since the time of their first collection in writing 2 millenia ago and probably as influential as any play by Aeschylus, Sophocles, Euripides etc."
"...and his look at Zeus's daughter/advisor, the patroness of wisdom, warfare & the city of Athens (also part 2 of my screen name; part 1 is a Titan, Greek mythology's equivalent of Iustitia: justice)."
"The standard before Graves's book (see above #1); more detailed - originally published in 3 parts & a true brick when compiled in 1 volume - but primarily for those seriously interested in this area."
"If all you want is a brief introduction, though, Edith Hamilton's "Mythology" (or her even shorter "Timeless Tales of Gods and Heroes") will probably do just fine - it even covers Norse myths as well."