tham khảo------------------------------ Today, when human society is in the 4.0 period with the novelty of the internet, our lives will become more useful than ever. The Internet or Network is a global information system linked by a series of technological, wireless, and optical networks that enable thousands of smaller computer and mobile networks of businesses. . Research institutes and universities, individual users and major overlays across the entire access. Here, people can look up all information as well as connect and contact people. The Internet has brought people many benefits and conveniences. We can look up information of all fields at any place, at any time, studying and researching becomes more convenient, easier and more convenient. In addition, the birth of social networks such as Facebook, zalo, instagram, etc. helps us connect with friends and loved ones in faraway places on the whole Earth and make new friends, giving gifts to each other. exchange, share precious moments or record your own memories. Besides, another extremely effective game that cannot be mentioned is the internet itself is entertainment. Since the advent of the internet, we have more entertainment options than ever before. From video games, to videos on websites in many different fields, movies, music, etc. are also integrated on the internet. We cannot deny the important role of the internet, but we do not use it or depend too much on it. Each person needs to know how to balance using the internet with participating in outside activities to become more active. Each of us should become a smart internet user so that we can both bring maximum benefits to ourselves and have a good experience.