I'm not sure about legal places to read it for free with good translations. It's best to support the creators by buying or subscribing through official channels.
Well, some libraries might have digital collections of manga that include JJK. You could also check out official manga apps or platforms that have the licensing rights.
Wan Shao was a novel that was restricted to online reading. You can find multiple websites that provide limited reading services for the novel. Among them, Qiu Yulu, Shao Online, and Wan Shao's novel all provided chapters of Wan Shao that were restricted to free reading. This novel described a story in a chaotic world, involving the collapse of imperial power, the rise of national wars, and the struggle for power for the immortal road. However, the specific storyline and content needed further reading to understand.
Celestial Bane novels could be read online for free. The specific chapter and table of contents could be found in the search results, but there was no specific reading link. It is recommended to use a search engine or a related reading platform to search further to find free online reading resources for Celestial Bane.
It depends on your preferences. If you want to experience the story quickly and in detail, go for the manga. But if you enjoy the animation and sound effects, waiting for the anime could be better.
Websites like Viz Media and Crunchyroll Manga are good options. They might have the continuation of JJK manga for you to enjoy. Also, check out local libraries or bookstores that carry manga collections.