The Elder Scrolls Online: Tamriel Unlimited

First you need to get a task in the “House of History” which is located in the city of Riverhold. After which you will need to find one fragment, there will be a sign to it, go back to the city, turn in the task, for this you will be given a book that contains tips on finding the remaining 15 fragments. You can collect fragments of your journey around the world in advance; the Wiki for the game on fextralife has the location of all fragments, both text and video.