The ancient Greeks had a huge pantheon of gods. That is why they are ordered in fiver groups.;The Olympian Gods, The Titans, Chthonic Gods and the Lesser Gods.  The profiles of each God and Goddess can be found under the group to which they belong.

The most important of those five  groups are the Olympian Gods which are Zeus and Hera the King and Queen of the Gods and ruler of the Olympic pantheon of Gods. There are 12 members:

Zeus: King of the Gods, God of Thunder and Lightening.
Hera: Queen of the Gods, Gardiendiety of marriage and oaths, married to the God Zeus.
Poseidon: God of the Seas and Earthquakes.
Hermes: God of the Merchants, Travelers and Thieves.
Demeter: Goddess of the harvest and the Earth.
Hestia: Goddess of the fire of the hearth.
Hephaestus: God of the Blacksmith.
Ares: God of War.
Aphrodite: Goddess of the Beauty, Love and Sexuality.
Apollo: God of the Music, Dance, Prophecy, Archery, the Sun. Essay written by Publius Dionysius Mus (Dennis Temmerman), focusing on the Roman and Hellenic Apollo.
Athena: Goddess of Wisdom, industry, Weave, Warfare and Justice.
Artemis: Goddess of the Hunt, wilderness, wild animals and fertility.

Than you had the second group of Gods who were sometimes called by the Elder Gods who go by the name of The Titans. They represent the Forces of Nature or they symbolize them.There is little information about most of The Titans except of those who were friends of the Olympian Gods like Oceanus and his wife Thetys. Maybe it was done on purpose to destroy the cult of The Titans. Like with the Olympian Gods there were also only 12 members.

Oceanus: Titan of the Sea, Married with the Goddess Thethys.
Oeranus: Titan of the Heaven, married with the Goddess Gaia.
Gaia: Goddess of the Earth.
Crius: Titan, married with the Goddess Eurybia and father of Perses, Pallas and Astraios.
Coeus: Titan, married with Phoebe and father of Leto and Asteria.
Japetus: Titan, married met Clymene and father of Atlas, Menoetius, Prometheus and Epimethus.
Themis: Goddess of Divine Justice and Naturelaw.
Hyperion: Titan of the Sun, married with Theia and father of Helios, Selene and Eos
Mnemosyne: Goddess of Memory and mother of the Muzes
Cronus(Kronos): Titan of the Time, and father of the Zeus, Hera, Poseidon, Demeter, Hestia and Hades
Rhea: Mothergoddess, one of the Titans and mother of the Olympian Gods by Cronus
Phoebe: one of The Titans and mother of Leto and Asteria

The Chthonic Gods are the Gods of the Underworld and the Earth . The most famous and most feared of them are Hades, Hecate and Demeter as Thanatos. There are others but not so much famous and they aren't with so many.

Erinyen: Goddess/Demons of Revenge.
Hades: God of the Underworld and Ruler over the dead.
Hecate(Hekate): Goddess of Witchcraft and Magic.
Persephone: Goddess of the Underworld.
Thanatos: God of Death.
Demeter: Goddess of the Harvest.
Dionysus: God of Wine, Fun and Drunkenness.

The Lesser Gods have more members than the ones above. They were sometimes called Free Spirits because of their connection with nature. The Oceanids(daughters of Oceanus en Thethys) were with threedousand and the Nereids with more than fifty members. The most important are listed below:

Hesperos: God of the Eveningstar.
Eosforos: God of the Morningstar.
Zefyros: God of the Western wind.
Notos: God of the Southern wind.
Euros: God of the Eastern Wind.
Boreas: God of the Northern wind.
Amphitrite: Seagoddess, married with Poseidon and one of the Nereids: sea nymphs.
Asklepios(Asclepius): God of Medicine and Medication, son of Apollo and Coronis
Dike: Goddess of justice, daughter of Themis and Zeus.
Eileithyea(Eileithyia): Goddess of Birth and daughter of Zeus and Hera.
Eirene: Goddess Peace and daughter of the God Zeus.
Eos: Goddess of Dawn, daughter of the Titans Hyperion and Theia.
Erebus: God and personification of the Darkness.
Eris: Goddess of Strife and Discord, and sister of Ares.
Fates(Moirai in Greek and Parcae in Latin): Goddess of Fate/Destiny. Their names are: Clotho, Lachesis and Atropos.
Gratiae: trio of Goddess who are associated with the  Goddess Aphrodite.
Hebe: Goddess of the Eternal Youth.
Himeros: God of Sexual Desire, travel with the Goddess Aphrodite.
Horae: Goddes of the Seasons. Their names are: Eunomia, Dike and Eirene.
Hygeia: Goddess of Health.
Hypnos: God of the Sleep.
Iris: Goddess of the Rainbow, Messenger of the Goddess Hera.
Morpheus: God of Dreams.
Muzes: nine Goddess of Arts, Music and Dance.
Nemesis: Goddess of Revenge.
Nereus: God of the Sea and father of the Nereids.
Nike: Goddess of Victory.
Nyx: Goddess of the Night.
Pan: God of the Forrest, Woods and the Countryside.
Peitho: Goddess of Persuasive companies the Goddess Aphrodite.
Triton: Watergod, son of Poseidon and Amphitrite.
Tyche: Goddess of Fortune..

Above information were compiled by the creator of the following website http://www.geocities.com/morosbe2001/ 

http://darkwing.uoregon.edu/~joelja/iliad.html

http://classics.mit.edu/Homer/iliad.html

Both sites contains the entire, translated text of Homer's Iliad. It is not the translation that I suggest and would best recommend, that being Fagles, however this is the only ones found on the Internet.

http://darkwing.uoregon.edu/~joelja/odyssey.html

http://www.online-literature.com/homer/odyssey/

Both sites contains the entire, translated text of Homer's Odyssey. It is not the translation that I suggest and would best recommend, that being Fagles, however this is the only ones found on the Internet.

More websites that contain information about the ancient myths and legnds can be found hereunder.

http://www.greekmythology.com

HELLENIC MYTHOLOGY NAMES

http://www.messagenet.com/myths/

http://homepage.mac.com/cparada/GML/ 

http://www.crystalinks.com/greekmythology.html

http://www.santorini-culture.gr/

http://webhome.idirect.com/~donlong/   (How the Hellenic and the Norse mythologies compare/interact)