If there are many books, there are two great display shelves in the small bedroom, which were moved home by a mechanic from the garage (the bed in the bedroom was moved to the utility room a few days ago, thus freeing up nearly 2 square meters of space in the bedroom)

Put the books you like and want to read most and the books you are most likely to read in the next six months on the shelf. Be sure to put the book where you can. The main reason for doing this is that you can get them easily. If all the books are piled up one by one, although they look well organized, you have no desire to turn them over at all. This is a fact.

In short, the principle of sorting is to put the books that are most needed and most likely to be turned over in the most convenient place, and pile up those books that are 6 or 7 years old and you think are too outdated or don't like, and put them in a corner of the room (pay attention to moisture prevention).