To get an idea of what happens during the session, let's say "Joe" needs help with an essay for English class. In the example of online tutoring, Joe would be able to show his entire essay to the tutor, and the tutor would in turn be able to verbally tell Joe some of the problem areas of the essay, as well, as correct the errors so that Joe can understand what he is doing wrong. If Joe needed help with math, he could type the math problem to his tutor or talk to the tutor if typing doesn't make sense. Really, online tutoring is no different than a real life tutor, except that you have access to great tutors across the country, rather than who is available in your area.
So, as you can probably see, it is hard to give an example of online tutoring since so much is done verbally, even though the student and tutor are working on their computers. However, it is a great way for a child to get help in many, many subjects.