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.
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.
Well, reading the manga gives you immediate access to the entire story and you can form your own visuals. The anime, on the other hand, might offer a more immersive experience with colors, voices, and music. So, it's up to what you value more at the moment.