Start here: the best apps for all your new devices

Christmas morning is over. The fire is roaring with wrapping paper, broken candy cane pieces litter the phone, and you've just opened a brand-new gadget. Maybe it's a new PlayStation 4, or an iPhone 6, or the Kindle tablet you've been not-so-subtly asking for all year. Now what? This year we've picked out some of the very best apps, games, books, and downloads for your new devices.