First, read the English article below.

These books can be obtained from some quests, or can also be purchased with real money. These books will grant you an instant EXP boost depending on your level. The higher level you are, the more EXP you obtain. This means that it is best to save these to use on later levels. Whenever you join a party, you will obtain an EXP bonus with every monster you kill. The EXP boost is in effect when you are on the same server channel and the same map as your party-mates.  You do not have to be fighting the same monsters as the rest of your party to earn the boost. The best way to take advantage of this is to form a party and then split up. AS long as you are on the same map, you will earn the boost. Be warned: if you're about to enter the Temple of Eidolon, make sure to leave the party you're in because being in a party may or may not kick you out from the dungeon before you can complete your task inside. As you grow stronger and gain more levels, the amount of EXP you earn from weak monsters drops off dramatically. Make sure that you are no more than ten levels higher than the monster you are fighting, otherwise it won't be worth the time investment. Always check the amount of EXP you earned to make sure that the grinding you did was worthwhile. 

Now, please write a short abstract for it in Indonesian. Abstract:
Gunakan Monster EXP Book. Bergabunglah ke dalam party untuk mendapatkan experience. Hindari monster level rendah.