With Position of the Day Expert Edition: Sex Every Day in Every Way (Chronicle Books, 2007), the third book in the wildly successful Position of the Day series, Nerve.com has done it again by cooking up another 365 sexual entwinements that are sure to thrill, inspire and challenge. (Just make sure you stretch first.)

No one knows more about making it work when opposites attract than introvert Marti Olsen Laney and her extrovert hubby, Michael Laney. Their helpful new book, The Introvert & Extrovert in Love (New Harbinger Publications, Inc., 2007), offers tons of great advice on building a strong, stable and fun relationship, despite your differing temperaments.

Maintenance sex—yes, every couple does it. When your sex drives fall out of sync, you concede those dutiful two minutes to “get it over with” in the name of being a good partner. But it doesn’t have to be that way. Part saucy sex manual, part relationship survival guide, Don and Debra Macleod’s Lube Jobs: A Woman’s Guide to Great Maintenance Sex (Penguin Group, 2007) shows you how to infuse it with spontaneity and affection and make it enjoyable for both parties.