I want to start drawing online comics. Whats a good program to use so that I may put my ideas to digital paper?

I want to start drawing online comics. Whats a good program to use so that I may put my ideas to digital paper? I have a copy of “Open canvas plus” and will look into buying a wacom drawing pad. I need to know whats a good program that allows me to make the “boxes” inwhich you draw your comic in or does open canvas allow that?