1. Bookstore near the school

2. Learn from your brothers and sisters.

3. Taobao's second-hand books. Some websites sell relatively new second-hand books. (It is more cost-effective to find more people to buy together, such as dormitories. Basically, you can buy a book for 5 yuan, and the total freight is 12. The more you buy, the more cost-effective. )

The meaning of old books:

1, saving money is cost-effective, and saving money is really real!

2. Follow the trend, keep pace with the times, protect the environment, save energy and enjoy resources. Developing circular economy is the development direction advocated by our society at present. In the United States, Germany, Japan and other countries, schools are recycling textbooks, and many cities in our country, including Shanghai, have also begun to promote the recycling of textbooks in schools. So second-hand books should be respected.