Do I need the books?

Hello, everyone. I have a quick question about the full-stack path that I am currently in. Every so often Codecademy recommends that I read ‘Javascript and Jquery’ (I believe is the book title), and I was wondering, do I really need these supplemental books? So far I have just been skipping them. Did you do the same?

Thank you,

From what I’ve heard from other people who have done the course, you don’t need the books; they’re just extras if you want some more reading.