New moon workings can be done from the day of the new moon to three and a half days after. The new moon is for starting new ventures, new beginnings. Also love and romance, health or job hunting.
From seven to fourteen days after the new moon. The waxing moon is for constructive magick, such as love, wealth, success, courage, friendship, luck or health.
From fourteen to seventeen and a half days after the new moon. Prime time for rituals for prophecy, protection, divination. Any working that needs extra power, such as help finding a new job or healings for serious conditions, can be done now. Also, love, knowledge, legal undertakings, money and dreams.
From three and a half to ten and a half days after the full moon. The waning moon is used for banishing magick, for ridding oneself of addictions, illness or negativity.
From ten and a half to fourteen days after the full moon. The dark moon is a time for dealing with attackers, for exploring our darkest recesses and understanding our angers and passions. Also bringing justice to bear.
Information from Wiccan Tables