If you want to learn more about computer viruses but don’t want to infect your own computer and you do not have the resources for a separate system, your options are limited. Even testing within a misconfigured virtual machine can expose yourself to unnecessary risk.
Alternatively, you can let somebody else do all the dirty work. The YouTube channel danooct1 shows videos of computer infections taking place. Classics like the first IBM PC virus, Brain, and the infamous Melissa virus are shown along with hundreds of others. The video of Melissa is also embedded below.