Need help on grammar.

The computer technology is one of the technologies that I use every day in my life. Nowadays, many people call the age we live in the age of computer technology. Because of the various usages, computers fit in the life of people in different groups of age. For example, a computer can help a business to handle millions or more of complicated documents and it can also be the children’s toy by using it to play the computer games. However, I use the computer for the other two main purposes in my life.
First of all, I use a computer to communicate with my parents and my friends. Since my parents and my friends are living far away from me, it is impossible to meet them every day. By using the webcam, I can chat with them and share my life to them every day. Moreover, it is important for me to know my parents’ recent situation. As time goes on, they are getting older and older. So, I have to make them happy and make sure they both look great. Even though I can just only look at them from the computer, it is the main responsibility for me to take care of them. On the other hand, if I haven’t kept the relationship with my friends for a long time, I may have been isolated by them.
Second, I use a computer to do almost all of the assignments for the classes that I am taking this semester. Some of the classes required the students to work on the Microsoft Access and Excel every day. Therefore, I have to use the computer every day. Besides that, it is common for the professors to use a computer during the class. Then, students have to take the notes from the overhead projector that was reflected by the computer.
Finally, I am gratified by the age of computer technology. The computer technology not only helps me to keep the relationship between my parents and friends, but also it helps people to improve their life such as education. I am sure that I can’t live in a world that is without the computer technology.

Is there any incorrect grammar?
Thanks.