The Spy x Family novel has its own charm. While the anime is great at visual storytelling, the novel can be more detailed in terms of the inner monologues of the characters. It gives you a different perspective on the story. For instance, Anya's telepathic experiences are described in a more in - depth way in the novel, which adds another layer to her character.
It depends on personal preference. Some people might think the manga is better for its original storytelling and art style. Others might prefer the anime for its animation and voice acting.
The connection between the anime and specific manga chapters isn't straightforward. It often depends on the creative decisions of the production team to adapt the story effectively.
Yes, they are. If you're a fan of the anime, the light novels can offer more of the story you love. You'll get to spend more time with the characters and see different sides of them.
I'd suggest starting from the beginning of the manga. Sometimes the anime leaves out little details or nuances that you can catch in the original source. Plus, it'll give you a deeper understanding of the story and characters.