This a very broad question. In other words, globalization affects us more than we can imagine. In light of this, let me list several ways. Keep in mind that this list is only a small sample.
First, through globalization we gain access to more of the world. For this reason, our worldviews can be broader as we learn about different cultures. Hence, there is an education aspect to globalization.
Second, we are able to get goods from around the world, where once these things were impossible. In addition, we are able to get goods at a better price, since much of what we consume has been produced in different countries where the cost of living is less.
Third, the downside of the second point is that many of ours manufacturing jobs and technical jobs have been outsourced and they may never come back. This causes greater economic hardships for us in the long run.
Fourth, because we are able to drawn people from the world, often times we are able to get the "best," as long as the price is right. For example, think of our universities. Some of the brightest minds come to teach at our colleges.
As you can imagine, the list goes on.