First of all, be familiar with the classification of books. Different kinds of books are marked with different capital letters (similar books are distinguished by numbers). Third, be familiar with the placement of bookshelves. If there are many books, you should memorize them in different regions and then operate the computer. Here we need to know how to scan bar codes with a scanner and cancel the data of damaged books. We should also receive new books from the library on time and urge borrowers to return overdue books. Then the returned books should be classified. Every day after the library closes, put the books on the shelves and tidy them up. Finally, smile at everyone who comes to borrow books. The most basic thing is to be familiar with the environment and regulations of the library. The most common thing is to clean regularly. The most helpless thing is how long it will take. The luckiest thing is to be in the ocean of knowledge. Hehe, I wish you a happy work in the library. I was a librarian when I was in college.