Books can give us the basics but that is where they stop. Our spirituality is all about personal experience.  We are not the people of the books, rather we are the people of the spiritual experiences.

This is a suggested reading list and is not meant to be the end all, be all list of books. 
There are many more titles that could be suggested, I am just giving a starting point.

                                                                                                -Boudica

Handbook style of books introducing Wicca:
 

Rae Beth – The Wiccan Path: A Guide for the Solitary Practitioner
Kerr Cuhulain – Wiccan Warrior: Walking a Spiritual Path in a Sometimes Hostile World
Scott Cunningham – Wicca: A Guide for the Solitary Practitioner
Scott Cunningham – Living Wicca: A Further Guide for the Solitary Practitioner
Janet Farrar and Gavin Bone – Progressive Witchcraft: Spirituality, Mysteries & Training in Modern Wicca
Eileen Holland – The Wicca Handbook
Arin Murphy-Hiscock – Solitary Wicca for Life
Christopher Penczak - Sons of the Goddess:  A Young Man's Guide to Wicca
Timothy Roderick - Wicca: A Year and a Day
 

General Reading on Wicca:

Rae Beth – The Wiccan Path: A guide for the Solitary Practitioner
Kerr Cuhulain – Wiccan Warrior: Walking a Spiritual Path in a Sometimes Hostile World
Scott Cunningham –Witchcraft Today
Scott Cunningham – Meaning of Witchcraft
Gerald Gardner – Witchcraft Today
Gerald Gardner – Meaning of Witchcraft
Raven Grimassi – Wiccan Mysteries
Judy Harrow – Devoted to You: Honoring Deity in Wiccan Practice
Christopher Penczak – Sons of the Goddess: A Young Man’s Guide to Wicca
Ellen Cannon Reed – Heart of Wicca: Wise Words from a Crone on the Path
Timothy Roderick – Wicca: A Year and a Day
Doreen Valiente – ABC of Witchcraft
Doreen Valiente – Witchcraft for Tomorrow
Doreen Valiente – Rebirth of Witchcraft

Handbook style books introducing WitchCraft:

Rae Beth – Hedge Witch: A Guide to Solitary Witchcraft
Sally Dubats – Natural Magick – The Essential Witch’s Grimoire
Marian Green - Wild Witchcraft: A Guide to Natural, Herbal and Earth Magic
Eileen Holland – Spells for the Solitary Witch
Moonsilvered - Magickal Progressions
Arin Murphy-Hiscock – Power Spellcraft for Life
Nigle Pennick – Natural Magic
Valerie Worth – Crones Book of Charms & Spells
Valerie Worth - Crones Book of Magical Words

General Reading on Witchcraft:

Aradia - Pick any translation 
Rae Beth – Hedge Witch: Guide to Solitary Witchcraft
Kerr Cuhulain – Witch Hunts: Out of the Broom Closet
Rosemary Ellen Guiley  - The Encyclopedia of Witches & Witchcraft
Sybil Leek – The Art of Witchcraft
Dorothy Morrison – Everyday Magic
Dorothy Morrison – The Craft: A Witches Book of Shadows
Ann Moura – Green Witchcraft
Lora O’Brien – Irish witchcraft from an Irish Witch

History:

Margot Adler – Drawing Down the Moon
Patricia Crowthers – High Priestess
Ronald Hutton – The Triumph of the Moon
Leo L. Martello – Witchcraft: The Old Religion
David Rankine & Sorita D’Este - Wicca: Magickal Beginnings
Lady Sheba – The Book of Shadows
Starhawk – The Spiral Dance

God and Goddess:

Barbara Ardinger – Finding New Goddesses – Reclaiming Playfullness in Our Spiritual Lives
Joseph Campbell – Masks of God – 4 books
Facts on File Encyclopedia of World Mythology and Legend
Dr Daithi O hOgain – Myth, Legend & Romance: And Encyclopedia of the Irish Folk Tradition
Ellen Cannon Reed – Circle of Isis – Ancient Egyptian Magic for Modern Witches
David Rankine & Sorita D’Este – The Guises of the Morrigan
David Rankine & Sorita D’Este - The Isles of the Many Gods
Kala Trobe – Invoke the Goddess: Visualizations of Hindu, Greek and Egyptian Deities
 

Ritual:

Ruth Barrett – Women’s Rites, Women’s Mysteries – Creating Ritual in the Dianic Wiccan Tradition
Renee Beck & Sydney Barbara Metrick – The Art of Ritual – Creating and Performing Ceremonies for Growth and Change
Campanelli -  Pagan Rites of Passage
Ivo Dominguez Jr. – Castings: The Creation of Sacred Space
Robert Gass (Author), Kathleen A. Brehony (Author) – Chanting: Discovering Spirit in Sound
Sandra Kynes – Year of Ritual

Rites of Passage:

Campanelli’s – Pagan Rites of Passage
Raven Kaldera & Tannin Schwartzstein – Handfasting and Wedding Ritual: Inviting Hera’s Blessing
Starhawk, et al – Pagan Book of Living and Dying

Wheel of the Year:

Campanelli’s – Wheel of the Year: Living the Magical Life
Janet & Stewart Farrar - Eight Sabbats for Witches
Mike Nichols – The Witches’ Sabbats
Ashleen O’Gaea – Celebrating the Seasons – Two Books