please, help me to correct this essay

Nowadays, computers are becoming an essential tool for students and teachers in learning and studying. While I accept that computer can teach students, but I do not believe that it can completely replace teachers in classrooms.
On the one hand, computer really able to teach students like a good teacher by using available applications or online resources. A computer always has a hard drives which store so many data for user, and it further can be installed leaning software which have many easily using applications including tests, books and video instructions. Students can facilities access the internet with many novel materials available like videos and online instructions. A concrete example is that they can watch videos and take tests follow relevant instructions.
On the other hand, computer still cannot replace teacher in the classrooms because of several reasons below. Firstly, little children who must go to school to learn, due to the way they can use language in the basic. Everyone who wants to use the computer they must have a background at least to know the words. Secondly, in some unique arms like art, medicine or painting if you expect to become expert, you will need to go to school to learn and practice with tutors. Finally, Studying with a computer in a long term that can make you stress and lose your health because of sitting and seeing in a mirror in many hours.
In conclusion, computers become very useful for students in learning and studying, but it cannot replace the role of teacher in the classroom completely.