There were many free comics websites that could provide a limited viewing service. Some of these websites included Soman, 96 Comics Network, Sakura Comics, Tick Tick Comics, Comic Station, 36 Comics, and so on. These websites all provided a large number of comic resources, and the update speed was fast, so was the access speed. Manga lovers could avoid reading all kinds of comics on these websites.
To determine if it's Free Comic Book Day, you might want to look at local comic book store promotions or search online for the official schedule. Usually, it's widely publicized, but you have to stay informed.
There were a few free comic book applications that could be downloaded and installed for free without advertisements. Some of the recommended applications included Meow Manga, Free Manga app Daquan, Mihon, and so on. These applications provided a wealth of comic resources, including well-known domestic and foreign comic works as well as original comic works. Users could choose the app that suited them according to their preferences to read free comic works.
It depends on the specific region and comic book stores. In some areas, May 6 is set as Free Comic Book Day, but not everywhere. You might want to check with your local comic book shops for confirmation.