There are many advantages and disadvantages of using the Internet. Let me name a few.
The advantages of the Internet are manifold. First, the Internet is incredibly fast and easy to use. Second, the Internet is accessible to many people, even at the same time. So, we can say that it is limitless. Or we can say that it democratizes knowledge. Third, massive amounts of knowledge can be used immediately. All of these are incredibly positive points.
With that said, there are some disadvantages. Perhaps the chief disadvantage is that there is simply too much out there. So, a person has to sift through what is good and not so good. In other words, there is a lot of junk on the Internet, which can be false information. So, you need to be careful.