Greg records his sixth-grade experiences in a middle school where he and his best friend, Rowley, undersized weaklings amid boys who need to shave twice daily, hope just to survive, but when Rowley grows more popular, Greg must take drastic measures to save their friendship.

High school sophomore Princess Mia records in her diary her struggles with geometry, the expectations of being a college student's girlfriend, running for president of the student council, and a potential ecological disaster in her native land, Genovia.

"Life was better in the old days. Or was it? That's the question Greg Heffley is asking as his town voluntarily unplugs and goes electronics-free. But modern life has its conveniences, and Greg isn't cut out for an old-fashioned world. With tension building inside and outside the Heffley home, will Greg find a way to survive?"--

"It's a frenemy showdown and Nikki Maxwell has the worst luck. Of all the schools she could have been assigned to for the student exchange week program, she's stuck at North Hampton Hills, her arch nemesis MacKenzie Hollister's new school. Even worse, there might just be someone at NHH who can out-MacKenzie MacKenzie! At least Nikki can write about every moment of drama in her diary, so readers won't miss a moment of it. Can the queen of dorks survive...

Sneak a peek inside Jamie Kelly's diary.

From the winter of 1779 until 1781, Abigail Stewart and her family follow the path of her father's Continental Army unit after their Valley Forge home burns down, enduring harsh winters and scarce food, and narrowly escaping danger time and again.

Thirteen-year-old Piper Davis records in her diary her experiences beginning in December 1941 when her brother joins the Navy, the United States goes to war, she attempts to document her life through photography, and her father--the pastor for a Japanese Baptist Church in Seattle--follows his congregants to an Idaho internment camp, taking her along with him. Includes historical notes.

Nikki tries to be a pet sitter, but realizes it's harder work than she thought.

A Quaker girl's diary reflects her experiences growing up in the Delaware River Valley of Pennsylvania and her capture by Lenape Indians in 1763.

While trying to find a new best friend after feuding with Rowley, middle-school slacker Greg Heffley is warned by older family members that adolescence is a time to act more responsibly and to think seriously about his future.