Sort out your books first, and divide them according to the degree of use, such as least commonly used, occasionally used and often used.

Then, according to the size of the book, put the least used, the smaller the better, in the place where you are most difficult to get, followed by occasional use and frequent use, especially frequent use, even on the desktop.

In addition, the books on the bookshelf must be placed vertically, because if the size is right, the small books can even have more room for other things.

Finally, it is best to stack them on the desktop, so that some heights can be stacked and some space can be saved.

PS。 So is my dormitory.