From Nooks and Kindles to iPads and Androids, people are reading on all their devices these days. Did you know that if you have a Fort Worth Library card, the library lets you download new e-books, for most devices, for free?For information about how to do this, or to sign up for an instruction class, go to fortworthtexas.gov/digitallibrary/.More than 5,000 e-book titles are available from the library's digital collection. Here are a few of the most popular young-adult titles right now:Deliriumby Lauren OliverHarper Collins, 2012For ages: 14 and olderWhat if love were considered a disease? And what if, at age 18, every person underwent surgery to become immune to that disease? And what if, just 95 days before you turned 18, you fell in love? This is the dilemma faced by Lena Haloway. She knows the government knows best how to keep people safe and she believes in its mission. But she also believes in Alex and in the feelings they have for each other. How far will they go to remain together in a society that offers them no choices and no chances?From anxiety to depression to impulsive behavior, this book makes a powerful case for emotion being a disease. This story is powerfully written and will stick with you for a long time.The sequel, Pandemonium, also is available from the Fort Worth Library in ePub and Kindle formats. The final book in the trilogy, Requiem, will be published in March 2013.Divergentby Veronica RothKatherine Tegen Books, 2012For ages: 14 and olderIn this dystopian Chicago world, society is split into five factions: Candor (the honest), Abnegation (the selfless), Dauntless (the brave), Amity (the peaceful) and Erudite (the intelligent). At 16, all teens go through an initiation where they choose which faction to belong to. Tris shocks her family by choosing a different faction and turning her back on everything she has previously known.As she struggles to discover and define her true self, she also must deal with dangerous initiations, her feelings for a superior, and a growing conflict between all the factions that could turn into war. Can the different groups, reminiscent of the "Harry Potter" houses and the "Hunger Games," learn to work together, or will their fighting destroy the society completely? This story is engrossing and difficult to put down.The second book in the series, Insurgent, also is available in e-book formats.Matchedby Ally CondieDutton Juvenile, 2012For ages: 14 and olderCassia trusts her society to make the right choices for her -- from what she eats to her job to whom she should marry. So when there's a glitch with her match, she panics. The society doesn't make mistakes, so how could she be matched with two very different guys? As she discovers more about what the society is hiding, she also falls in love with the nonapproved boy. Being together means defying all they know and is an impossible choice. Where can they go from here?Set in a creepy world where written communication no longer exists because it can't be monitored, where the government has destroyed all books, music and art except for the 100 items it deems acceptable, where the elderly are "put to rest" at age 80 ... this story is incredibly impactful and chilling, mostly because it seems so plausible.Crossed, the second book in the series, also is available in e-book formats.When You Reach Meby Rebecca SteadWendy Lamb Books, 2009For ages: 10 and olderThere's a reason this book won the 2010 Newbery Award. It's a special story in which every detail has hidden meaning. What seems to be a fairly mundane tale of a young girl dealing with a normal existence turns into a roller-coaster ride of mistaken identity, true love, notes from the future and plausible time travel. Yes, time travel. With multiple allusions to another Newbery Award winner, A Wrinkle in Time, Stead has built an incredible tale of adventure that builds all these innocent happenings into a tense and shocking conclusion. It is a wholly unique, not-to-be missed tale.Wonderby R.J. PalacioKnopf BooksFor ages: 10 and olderWonder is the story of a boy named Auggie who has severe facial deformities. He's mainstreamed into school for the first time and predictably, it's hard going. The story switches character viewpoints every few chapters, and it is fascinating to see different people's reactions to Auggie and his situation.Though this story has the potential to be a difficult read, it never ventures into that territory. It's interesting and empowering, a fascinating story told with a fresh voice. It includes a strong and relevant message that bullying is never OK, that every person has worth and that we all need someone to stick up for us and to be on our side. Palacio has called the book "a meditation on kindness," and she is not wrong. This story will tug at your heartstrings and make you want to treat everyone more kindly, and to be a better person, in general, every day.