I'd recommend beginning at the beginning, so Volume 1. That way, you get the full story as the author intended without missing any crucial details or build-up.
I'd suggest beginning with the first chapter. It sets the foundation and introduces the main characters and the initial plot. From there, you'll be able to follow the story's progression smoothly. Also, check out some online manga platforms that have clear starting points and good reading interfaces.
Yes, it is. As a Jujutsu Kaisen fan, the 'JJK 0 Light Novel' gives you extra content related to the story. You can learn more about the characters and their relationships, which is always exciting.
Well, to read the JJK manga after the anime, first, you need to know the last episode or chapter covered by the anime. Then, find the next chapter and start from there. You can get it from official manga platforms or local comic stores.
It depends on your personal preference. You can start immediately if you can't wait to know more. Or, you might want to wait a bit to let the anime's impact sink in.