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

Try searching for বই about folklore and legends. Fairies, myths, mythology and stuff like that.
I have noticed that there are differences in উত্তর to those types of প্রশ্ন depending on the answer source. As an example, elves অথবা মৎসকুমারী may have different descriptions and qualities from Celtic lore to Viking অথবা Eastern lore.
Hope that helps.