The Book of Training can be purchased from the “Black Spirit's Training” Jamey Drucker in each major city, and it is also sold in the Pearl Shop (F3) - Black Spirit's Pick - Silver Event Items during the event. 

The Book of Training is divided into Combat and Skill types. Using them allows you to automatically gain Combat and Skill EXP through Scarecrow Training. 

Tip! Need to step away from your computer for a bit? Use Scarecrow Training to keep gaining Combat/Skill EXP! 

Right-click on the Book of Training to use it, which will let you interact with a scarecrow. 

- Note: You cannot interact with a scarecrow if you are in a party/platoon or not equipped with main/sub-weapons. 

Approach a scarecrow near ”Black Spirit's Training” NPC Jamey Drucker and interact (R) with it.

You can check the available training time via the UI in the upper portion of your screen. 

Be aware that the duration of the Book of Training's effect will continue to decrease even during disconnections or maintenance.  

The Book of Training - Combat can boost your Combat EXP by up to 99% of a level. Pairing it with Combat EXP Increase items creates a great synergy effect.  

However, be aware that the effects of the Book of Training - Skill do not stack with those of Skill EXP Increase items!