is there any book where i can know 更多 about 幻想 creatures like what do they like and etc ?

Try searching for 图书 about folklore and legends. Fairies, myths, mythology and stuff like that.
I have noticed that there are differences in 答案 to those types of 问题 depending on the answer source. As an example, elves 或者 《美人鱼》 may have different descriptions and qualities from Celtic lore to Viking 或者 Eastern lore.
Hope that helps.