Young Writers Society

And someone already mentioned it

If you need books about structure and plotting, Save The Cat does a really good job at creating a roadmap for you to follow if you want to write a successful book. It is for screenwriting but you can use it for novels as well.

There's also Save The Cat! Writes a Novel if you think that a book on screenwriting wouldn't be of your taste.

Here's the links.

https://www.amazon.com/Save-Last-Book-Screenwriting-Youll/dp/1932907009
https://www.amazon.com/Save-Cat-Writes-Novel-Writing/dp/0399579745

- Purple

Yeah, totally! There's always Stephen King's 'On Writing', which is a classic. And if you're looking for something more contemporary, there's 'Steal Like an Artist' by Austin Kleon - it's hype!