Is it worth helping?

I am the kind of person who tries to be helpful. For instance, in class there are many who are inexperienced on how to navagate a computer and browse the web. I do my best to help my classmates, but at times I have several people calling for my help and I am trying to do my work as well. I get very overwhelmed at times and can't help everyone. Then, I get an attitude from someone who I am unable to help and they make rude and inconsiderate comments to other people about it. When I try to fix the problem they continue to be rude and belittling. I'm not perfect and I'm not a genious. I learned my way around a computer by playing with it. I didn't go to school to learn. If I can learn it then others can too. Don't be afraid to explore!