Well, there are a few ways. Sometimes, libraries have digital collections of comics that you can access for free with a library card. Also, some comic creators or publishers might offer free issues or samples on their official websites. Just keep in mind that finding completely free and legal options can be a bit challenging.
One way could be to check your local library. They might have a digital collection of comic books that you can access for free. Also, some comic book creators offer free chapters or issues on their official websites to attract readers.