The full text is on-line at perseus (http://perseus.mpiwg-berlin.mpg.de/).
Hesiod is perhaps the earliest known Greek individual author. The text may predate Homer. It is usually dated to some time in the 7th century BC. What I want us to get out of it is that one of the very first Greek texts is a genealogical classification. We will talk about the nature of that classification. Do not worry about all the names. Just get a good idea of what sort of story is being told. Pay particular attention to the first few beings whom Hesiod talks about.
Hail, children of Zeus! Grant lovely song  and celebrate the holy race of the deathless gods who are for ever, those that were born of Earth and starry Heaven and gloomy Night and them that briny Sea did rear. Tell how at the first gods and earth came to be, and rivers, and the boundless sea with its raging swell,  and the gleaming stars, and the wide heaven above, and the gods who were born of them, givers of good things, and how they divided their wealth, and how they shared their honors amongst them, and also how at the first they took many-folded Olympus. These things declare to me from the beginning, you Muses who dwell in the house of Olympus,  and tell me which of them first came to be.
In truth at first Chaos came to be, but next wide-bosomed Earth, the ever-sure foundation of all1 the deathless ones who hold the peaks of snowy Olympus, and dim Tartarus in the depth of the wide-pathed Earth,  and Eros (Love ), fairest among the deathless gods, who unnerves the limbs and overcomes the mind and wise counsels of all gods and all men within them. From Chaos came forth Erebus and black Night; but of Night were born Aether2 and Day,  whom she conceived and bore from union in love with Erebus. And Earth first bore starry Heaven, equal to herself, to cover her on every side, and to be an ever-sure abiding-place for the blessed gods. And she brought forth long hills, graceful haunts  of the goddess Nymphs who dwell amongst the glens of the hills. She bore also the fruitless deep with his raging swell, Pontus, without sweet union of love. But afterwards she lay with Heaven and bore deep-swirling Oceanus, Coeus and Crius and Hyperion and Iapetus,  Theia and Rhea, Themis and Mnemosyne and gold-crowned Phoebe and lovely Tethys. After them was born Cronos the wily, youngest and most terrible of her children, and he hated his lusty sire.
And again, she bore the Cyclopes, overbearing in spirit,  Brontes, and Steropes and stubborn-hearted Arges,1 who gave Zeus the thunder and made the thunderbolt: in all else they were like the gods,  but one eye only was set in the midst of their foreheads. And they were surnamed Cyclopes (Orb-eyed ) because one orbed eye was set in their foreheads. Strength and might and craft were in their works.
And again, three other sons were born of Earth and Heaven, great and doughty beyond telling, Cottus and Briareos and Gyes, presumptuous children.  From their shoulders sprang a hundred arms, not to be approached, and fifty heads grew from the shoulders upon the strong limbs of each, and irresistible was the stubborn strength that was in their great forms. For of all the children that were born of Earth and Heaven,  these were the most terrible, and they were hated by their own father from the first. And he used to hide them all away in a secret place of Earth so soon as each was born, and would not suffer them to come up into the light: and Heaven rejoiced in his evil doing. But vast Earth  groaned within, being straitened, and she thought a crafty and an evil wile. Forthwith she made the element of grey flint and shaped a great sickle, and told her plan to her dear sons. And she spoke, cheering them, while she was vexed in her dear heart:
 ≥My children, gotten of a sinful father, if you will obey me, we should punish the vile outrage of your father; for he first thought of doing shameful things.≤
So she said; but fear seized them all, and none of them uttered a word. But great Cronos the wily took courage and answered his dear mother:
 ≥Mother, I will undertake to do this deed, for I reverence not our father of evil name, for he first thought of doing shameful things.≤
So he said: and vast Earth rejoiced greatly in spirit, and set and hid him in an ambush, and put in his hands  a jagged sickle, and revealed to him the whole plot.
And Heaven came, bringing on night and longing for love, and he lay about Earth spreading himself full upon her.1 Then the son from his ambush stretched forth his left hand and in his right took the great long sickle  with jagged teeth, and swiftly lopped off his own father's members and cast them away to fall behind him. And not vainly did they fall from his hand; for all the bloody drops that gushed forth Earth received, and as the seasons moved round  she bore the strong Erinyes and the great Giants with gleaming armour, holding long spears in their hands and the Nymphs whom they call Meliae2 all over the boundless earth. And so soon as he had cut off the members with flint and cast them from the land into the surging sea,  they were swept away over the main a long time: and a white foam spread around them from the immortal flesh, and in it there grew a maiden. First she drew near holy Cythera, and from there, afterwards, she came to sea-girt Cyprus, and came forth an awful and lovely goddess, and grass  grew up about her beneath her shapely feet. Her gods and men call Aphrodite, and the foam-born goddess and rich-crowned Cytherea, because she grew amid the foam, and Cytherea because she reached Cythera, and Cyprogenes because she was born in billowy Cyprus,  and Philommedes3 because she sprang from the members. And with her went Eros, and comely Desire followed her at her birth at the first and as she went into the assembly of the gods. This honor she has from the beginning, and this is the portion allotted to her amongst men and undying gods,--  the whisperings of maidens and smiles and deceits with sweet delight and love and graciousness.
But these sons whom he begot himself great Heaven used to call Titans (Strainers ) in reproach, for he said that they strained and did presumptuously  a fearful deed, and that vengeance for it would come afterwards.
And Night bore hateful Doom and black Fate and Death, and she bore Sleep and the tribe of Dreams.  And again the goddess murky Night, though she lay with none,  bare Blame and painful Woe,  and the Hesperides who guard the rich, golden apples and the trees bearing fruit beyond glorious Ocean. Also she bore the Destinies and ruthless avenging Fates, Clotho and Lachesis and Atropos,1 who give men at their birth both evil and good to have,  and they pursue the transgressions of men and of gods: and these goddesses never cease from their dread anger until they punish the sinner with a sore penalty. Also deadly Night bore Nemesis (Indignation ) to afflict mortal men, and after her, Deceit and Friendship  and hateful Age and hard-hearted Strife.
But abhorred Strife bore painful Toil and Forgetfulness and Famine and tearful Sorrows, Fightings also, Battles, Murders, Manslaughters, Quarrels, Lying Words, Disputes,  Lawlessness and Ruin, all of one nature, and Oath who most troubles men upon earth when anyone willfully swears a false oath.
And Sea begat Nereus, the eldest of his children, who is true and lies not: and men call him the Old Man  because he is trusty and gentle and does not forget the laws of righteousness, but thinks just and kindly thoughts. And yet again he got great Thaumas and proud Phorcys, being mated with Earth, and fair-cheeked Ceto and Eurybia who has a heart of flint within her.
 And of Nereus and rich-haired Doris, daughter of Ocean the perfect river, were born children,1 passing lovely amongst goddesses, Ploto, Eucrante, Sao, and Amphitrite, and Eudora, and Thetis, Galene and Glauce,  Cymothoe, Speo, Thoe and lovely Halie, and Pasithea, and Erato, and rosy-armed Eunice, and gracious Melite, and Eulimene, and Agaue, Doto, Proto, Pherusa, and Dynamene, and Nisaea, and Actaea, and Protomedea,  Doris, Panopea, and comely Galatea, and lovely Hippothoe, and rosy-armed Hipponoe, and Cymodoce who with Cymatolege2 and Amphitrite easily calms the waves upon the misty sea and the blasts of raging winds,  and Cymo, and Eione, and rich-crowned Alimede, and Glauconome, fond of laughter, and Pontoporea, Leagore, Euagore, and Laomedea, and Polynoe, and Autonoe, and Lysianassa, and Euarne, lovely of shape and without blemish of form,  and Psamathe of charming figure and divine Menippe, Neso, Eupompe, Themisto, Pronoe, and Nemertes3 who has the nature of her deathless father. These fifty daughters sprang from blameless Nereus, skilled in excellent crafts.
 And Thaumas wedded Electra the daughter of deep-flowing Ocean, and she bore him swift Iris and the long-haired Harpies, Aello (Storm-swift ) and Ocypetes (Swift-flier ) who on their swift wings keep pace with the blasts of the winds and the birds; for quick as time they dart along.
 And again, Ceto bore to Phorcys the fair-cheeked Graiae, sisters grey from their birth: and both deathless gods and men who walk on earth call them Graiae, Pemphredo well-clad, and saffron-robed Enyo, and the Gorgons who dwell beyond glorious Ocean  in the frontier land towards Night where are the clear-voiced Hesperides, Sthenno, and Euryale, and Medusa who suffered a woeful fate: she was mortal, but the two were undying and grew not old. With her lay the Dark-haired One1 in a soft meadow amid spring flowers.  And when Perseus cut off her head, there sprang forth great Chrysaor and the horse Pegasus who is so called because he was born near the springs2 of Ocean; and that other, because he held a golden blade3 in his hands. Now Pegasus flew away and left the earth, the mother of flocks,  and came to the deathless gods: and he dwells in the house of Zeus and brings to wise Zeus the thunder and lightning. But Chrysaor was joined in love to Callirrhoe, the daughter of glorious Ocean, and begot three-headed Geryones. Him mighty Heracles slew  in sea-girt Erythea by his shambling oxen on that day when he drove the wide-browed oxen to holy Tiryns, and had crossed the ford of Ocean and killed Orthus and Eurytion the herdsman in the dim stead out beyond glorious Ocean.
 And in a hollow cave she bore another monster, irresistible, in no wise like either to mortal men or to the undying gods, even the goddess fierce Echidna who is half a nymph with glancing eyes and fair cheeks, and half again a huge snake, great and awful, with speckled skin, eating raw flesh beneath the secret parts of the holy earth. And there she has a cave deep down under a hollow rock far from the deathless gods and mortal men. There, then, did the gods appoint her a glorious house to dwell in: and she keeps guard in Arima beneath the earth, grim Echidna,  a nymph who dies not nor grows old all her days.
Men say that Typhaon the terrible, outrageous and lawless, was joined in love to her, the maid with glancing eyes. So she conceived and brought forth fierce offspring; first she bore Orthus the hound of Geryones,  and then again she bore a second, a monster not to be overcome and that may not be described, Cerberus who eats raw flesh, the brazen-voiced hound of Hades, fifty-headed, relentless and strong. And again she bore a third, the evil-minded Hydra of Lerna, whom the goddess, white-armed Hera nourished,  being angry beyond measure with the mighty Heracles. And her Heracles, the son of Zeus, of the house of Amphitryon, together with warlike Iolaus, destroyed with the unpitying sword through the plans of Athena the spoil driver. She was the mother of Chimaera who breathed raging fire,  a creature fearful, great, swift footed and strong, who had three heads, one of a grim-eyed lion, another of a goat, and another of a snake, a fierce dragon; in her forepart she was a lion; in her hinderpart, a dragon; and in her middle, a goat, breathing forth a fearful blast of blazing fire.  Her did Pegasus and noble Bellerophon slay; but Echidna was subject in love to Orthus and brought forth the deadly Sphinx which destroyed the Cadmeans, and the Nemean lion, which Hera, the good wife of Zeus, brought up and made to haunt the hills of Nemea, a plague to men.  There he preyed upon the tribes of her own people and had power over Tretus of Nemea and Apesas: yet the strength of stout Heracles overcame him.
And Ceto was joined in love to Phorcys and bore her youngest, the awful snake who guards  the apples all of gold in the secret places of the dark earth at its great bounds. This is the offspring of Ceto and Phorcys.
And Tethys bore to Ocean eddying rivers, Nilus, and Alpheus, and deep-swirling Eridanus, Strymon, and Meander, and the fair stream of Ister,  and Phasis, and Rhesus, and the silver eddies of Achelous, Nessus, and Rhodius, Haliacmon, and Heptaporus, Granicus, and Aesepus, and holy Simois, and Peneus, and Hermus, and Caicus' fair stream, and great Sangarius, Ladon, Parthenius,  Euenus, Ardescus, and divine Scamander.
Also she brought forth a holy company of daughters1 who with the lord Apollo and the Rivers have youths in their keeping--to this charge Zeus appointed them--Peitho, and Admete, and Ianthe, and Electra,  and Doris, and Prymno, and Urania divine in form, Hippo, Clymene, Rhodea, and Callirrhoe, Zeuxo and Clytie, and Idyia, and Pasithoe, Plexaura, and Galaxaura, and lovely Dione, Melobosis and Thoe and handsome Polydora,  Cerceis lovely of form, and soft eyed Pluto, Perseis, Ianeira, Acaste, Xanthe, Petraea the fair, Menestho, and Europa, Metis, and Eurynome, and Telesto saffron-clad, Chryseis and Asia and charming Calypso,  Eudora, and Tyche, Amphirho, and Ocyrrhoe, and Styx who is the chiefest of them all. These are the eldest daughters that sprang from Ocean and Tethys; but there are many besides. For there are three thousand neat-ankled daughters of Ocean who are dispersed far and wide,  and in every place alike serve the earth and the deep waters, children who are glorious among goddesses. And as many other rivers are there, babbling as they flow, sons of Ocean, whom queenly Tethys bare, but their names it is hard for a mortal man to tell,  but people know those by which they severally dwell.
And Theia was subject in love to Hyperion and bore great Helius (Sun ) and clear Selene (Moon ) and Eos (Dawn ) who shines upon all that are on earth and upon the deathless Gods who live in the wide heaven.
 And Eurybia, bright goddess, was joined in love to Crius and bore great Astraeus, and Pallas, and Perses who also was eminent among all men in wisdom.
And Eos bore to Astraeus the strong-hearted winds, brightening Zephyrus, and Boreas, headlong in his course,  and Notus,--a goddess mating in love with a god. And after these Erigeneia1 bare the star Eosphorus (Dawn-bringer ), and the gleaming stars with which heaven is crowned.
And Styx the daughter of Ocean was joined to Pallas and bore Zelus (Emulation ) and trim-ankled Nike (Victory ) in the house. Also she brought forth  Cratos (Strength ) and Bia (Force ), wonderful children. These have no house apart from Zeus, nor any dwelling nor path except that wherein God leads them, but they dwell always with Zeus the loud-thunderer. For so did Styx the deathless daughter of Ocean plan  on that day when the Olympian Lightning god called all the deathless gods to great Olympus, and said that whosoever of the gods would fight with him against the Titans, he would not cast him out from his rights, but each should have the office which he had before amongst the deathless gods.  And he declared that he who was without office or right under Cronos, should be raised to both office and rights as is just. So deathless Styx came first to Olympus with her children through the wit of her dear father. And Zeus honored her, and gave her very great gifts,  for he appointed her to be the great oath of the gods, and her children to live with him always. And as he promised, so he performed fully unto them all. But he himself mightily reigns and rules.
This text goes on a fair bit in the same vein, eventually getting to all the gods and then the heroes. A subsequent text probably told of more heroes.