Adenah’s Jottings is one of the People Lore Books you have to find and read in order to complete the A Quick Study Achievement. Listed below is where you can find Adenah’s Jottings and how to obtain Adenah’s Jottings
Adenah's Jottings - Fields of Misery - The Adenah's Jottings People Lore Books will be dropped by Adenah's Jottings found inside the House of Curios at the Fields of Misery. The House of Curios is a rare dungeon spawn. It will take you several tries to get the People Lore Book
More guides can be seen at the Diablo III Forums. The complete list of all People Lore Books can be found at the Diablo III A Quick Study Achievement Guide. If you have more info about Adenah’s Jottings please post them below.