Double, double, toil and trouble.
Everyday Magic: Spells & Rituals for Modern Living, by Dorothy Morrison
This spell book — used frequently and enthusiastically by the BuzzFeed Witches — is both comprehensive and accessible, requiring (in most cases) few ingredients and/or supplies. Includes spells for issues broad (finding love) and narrow (finding one's parked car).
The Spells Bible: The Definitive Guide to Charms and Enchantments, by Ann-Marie Gallagher
While Gallagher's spells (of which there are over 150 in this book) are often a bit more involved, and require a bit more supply-shopping, than others on this list, each of them comes with informative background information that makes this an interesting read regardless of how many of its spells you might perform.
Walking Stick Press
Wicca Candle Magic: A Beginner's Guide to Practicing Wiccan Candle Magic, with Simple Candle Spells, by Lisa Chamberlain
For those interested in candle magic — perhaps one of modern witchcraft's most accessible, and most fun, forms — Lisa Chamberlain offers a solid introduction for beginners, including information on color choice, candle consecration, tips, and spells.
Amazon
Circle of Eight: Creating Magic for Your Place on Earth, by Jane Meredith
Jane Meredith's book offers a unique, spiritual process for those interested in "local magic," or the idea that one can welcome magic (and attendant good fortune) into one's surroundings by working with his or her natural environment, the seasons, and the elements.
Llewellyn Publications
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13 Magical Spellbooks For Getting In Touch With Your Witchy Side