As a student, I need to learn how to save money, especially when I live alone. We need to live with a certain income or daily pocket money and save for the future without wasting, so we need to save money. There are many disposable things in our life, such as plastic bags and paper. An example is saving money through paper. There are a lot of old papers in the office or library. If we ran out of paper, we would buy new one. However, it takes money to buy a new one, so if there is any part left that can be used, we can use it again as scrap paper in order to save money. Another method is to turn off the lights and television when we are not using them. If we keep turning on the lights, it costs a lot of money. However, if we turn off the light or television, it does not cost much money. So you can save money by turning off the lights. Third, energy saving is also important for learning recycling and waste disposal. It is possible to use less energy by recycling, that is, by using my own bag instead of a plastic bag. Most stores provide plastic bags to customers. The plastic bag is sturdy and very useful for me. However, by making plastic items, it releases oil as a raw material into the earth. This could lead to global warming. If I use my own bag instead of a plastic bag, it can save oil. Also nowadays some markets are taking money by buying plastic.