What is the best way to volunteer from your house or from distance?

I want to help people who need it but I would like to do it from distance. In the past I heard about a program that people record their voices while reading books to help people with vision problem and I regretted I was not a part of it. Do you know any program where I could help from distance? (by volunteering I mean working and not paying because I want to be sure that help will be given to people who need it)