This book doesn't shy away from graphic details. Tracy Cox, a veteran sex author, debunks myths and gives instruction on things we didn't know were physically possible.

The tips:
• Get out of a rut
Create "I'm up for it" signals. It's easy to miss each other's cues. So make the signs physical, like massaging his shoulders or rubbing his leg—in other words, make it so obvious that even the cat knows to leave the room.

• Talk dirty
And if you can't bring yourself to whisper naughty things in his ear, send him a text, or write on the steamed mirror while he's in the shower: "Just thought you'd like to know: [you fill in the blank]."

DK Publishing, $24