Inside the Duggars' Relationship Advice Book

One piece of advice? It's important to see suitors in "normal family settings."

Feb. 20, 2014 -- First reality stars, now authors.

The eldest Duggar girls, Jana, 24, Jill, 22, Jessa, 21, and Jinger, 20, stars of the TLC show, "19 Kids & Counting," penned a book called "Growing Up Duggar," which hits shelves March 4.

According to People, the book is about their relationships, both with their relatives and with men.

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"We want to get acquainted with a young man in a normal family setting, where we'll be watching how he treats our brothers and sisters," they wrote. "We want to see how he reacts to normal family events, such as Josie accidentally spilling her milk in his lap, Jackson unintentionally ruining his board game or Joseph trouncing him in a basketball match."

They're referring, of course, to their siblings. Their parents Jim Bob, 48, and Michelle, 47, have 19 children: Josh, 25, John-David, 24, Joseph, 19, Josiah, 17, Joy-Anna, 16, twins Jedidiah and Jeremiah, 15, Jason, 13, James, 12, Justin, 11, Jackson, 9, Johanna, 8, Jennifer, 6, Jordyn, 5, and Josie, 4.

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This season, dating will feature more prominently in the reality show, as Jessa has a new beau, Ben Seewald.

"Jessa has a very steady personality," Michelle said last fall of the burgeoning romance. "It has been interesting to watch their interactions because for her personality type, they share very similar beliefs. It has been fun to watch them, and both of our phones are going off back and forth, ping, ping, ping."