Yes, you can. Since you can use public domain stories freely, you can create products or services based on them and then sell them. For example, you could write a novel based on a public domain story and sell it. Just make sure you follow all the legal requirements and ethical norms while doing so.
You can access them through public libraries. Many libraries have a section dedicated to public domain works, both in physical and digital formats. You can borrow these books for free and enjoy reading them at your own pace.
First, you need to choose a public domain book. Then, break the story into scenes and dialogues. Next, find or create suitable art for each scene. You can use free or cheap digital art tools. After that, use a visual novel creation software to assemble everything. For example, Ren'Py is a popular choice. Finally, test the visual novel to make sure the story flows well and the art matches the mood.
Sword Domain Online could earn money through the equipment in the game. Players could obtain equipment of different grades and sell them for profit. In addition, the game store, the donation and first charge system, advertisements, and time-limited activities were also ways for players to earn additional rewards. Although the amount of money earned might be small, these methods played an important role in making money in the game.
One way to tell is by checking the copyright date. If it's been a long time since the work was created and the copyright hasn't been renewed, it might be in the public domain.
To make money in comic books, consider crowdfunding to fund your projects and build a fan base. You can also offer subscription services for ongoing comic series. And don't forget to market your comics effectively through social media and online communities.
You could also consider crowdfunding to fund the creation and promotion of your comic books, and then make money from sales. Or, offer exclusive content or limited editions to attract collectors willing to pay a premium.
The main benefit is the freedom of use. You can listen to them, share them (within the limits of the law), and use them for various purposes like creating derivative works (again, following the legal guidelines). They also preserve cultural heritage. Classic novels in audio form can be passed down and enjoyed by new generations. And for those who love exploring different literary styles, public domain audio books novels provide a treasure trove of different writing styles from different historical periods.