Reading one of these books can fail, but - very, very often - it can improve one of your specific skills when reading it successfully. All books disappear after reading.
Skill books (e.g.: Dragon-shoot Skill book) are dropped by Metins. In order to increase Grand Master Skills, you will need Soulstones. The books from the chests have allegedly a higher chance of success, they are, however, "Large Master Books".
The remaining books seem to be a random drop from monsters too, since many players got the books of perfectly different monsters.
|Mining Guide||all monsters||Successful reading will increase the mining level.|
|Horse Riding Tome||all monsters||Successful reading of this book increases the available horse skills. The book disappears after reading.|
|Horse Taming Manual||all monsters||Successful reading of this book increases the skill of calling your horse.|
|Dragon's Claw||90 maps bosses||Successful reading of this book increases your pierce attack chance.|
|Dragon's Heart||90 maps bosses||Successful reading of this book increases your maximal health points.|
Starting from level 30 one can read one of the books. Starting from level 50 then second. The impact sequence increases each time by an impact.
|Beginner Continuum Book||all monsters||A tactics book that is used to train Combos. The book disappears after reading.|
|Advanced Continuum Book||all monsters||The advanced tactics book is used used to train Combos. The book disappears after reading.|
|Expert Continuum Book||all monsters||The master tactics book is used to train Combos.|
|SunZi Art of War||all monsters||First of the three war strategy books. Increases the Leadership-level (1-20).|
|Wuzi Art of War||all monsters||Second of the three war strategy books. Increases the Leadership-level (M1-M10).|
|GuiGu Art of War||all monsters||Third of the three war strategy books. Increases the Leadership-level (G1-G10).|
|Polymorph Book||all monsters||Use this book, in order to read your transforming Skill to a higher level (1-20)|
|Advanced Polymorph Book||all monsters||Use this book, in order to read your transforming Skill to a higher level (M1-M10)|
|Master Polymorph Book||all monsters||Use this book, in order to read your transforming Skill to a higher level (G1-G10)|
|Gold Treasure Box||Skill books can be dropped by all Metins. The larger the level difference to the Metin is, the more likely a successful drop.|
corresponds to a skill book
|Book Day Gold Treasure Box+ Silver Treasure Box+||Right Click to read a Tome book. With a Tome book, you can increase master skill.|
corresponds to a skill book
|Gold Treasure Box+,Silver Treasure Box||Use it, in order to master a certain skill. Increase skill by 1-3 points if it's read successfully.|
|Soul Stone||Reward from Expert missionbooks, dropped from metins and bosses.||Used to train grand master skills. It disappears after use.|
|(Skill name) Band of Oblivion||Metin of Jealousy, Metin of Shadow, Metin of Toughness, Metin of Devil, Metin of Deceit, Metin of Death, Metin of Murder, Metin of Wind Devil, Metin of Devil Eyes, Metin of Fighting Dragon, Metin of Lightning Cloud, Gold Treasure Box, Gold Treasure Box+, Silver Treasure Box, Silver Treasure Box+||A book used to erase one skill point which you can use to raise another skill.|