How Kate Middleton Has Been Trained to "Deal With" Royal Pressures

Kate Middleton knows exactly what she's getting into when she weds Prince William on April 29, 2011 at Westminster Abbey.

As her romance with the future King of England progressed, the 28-year-old Middleton "was given royal assistance like no other girl has ever been given before entering the family," a palace insider tells the new Us Weekly, on sale today.

That "royal assistance" included intense lessons on the chaotic life of her late mother-in-law, Princess Diana, says Katie Nicholl, author of William and Harry: Behind the Palace Walls.

"About three years ago, palace staff started showing Kate video of Diana," Nicholl tells Us. "Video of her getting out of a car and paparazzi going berserk, so that Kate would know how to deal with it. Now she already knows how this works."

The future Princess will also receive tutorials on royal correspondence, public speaking, and "how to behave at banquets," Nicholl tells Us.

For much more details on the wedding -- the ancient royal origins of her wedding ring, how Middleton will be an "Army wife," and more on the over-the-top perks -- pick up the new Us Weekly, out today!