Do I Need an LLC for Amazon Associates?

Hey all!

I’m currently going through the Author Tax and Business course. I’ve been planning on joining Amazon Associates for a while, since I frequently review and link to books, but I’m wondering if I need to get my LLC set up first. Will it simplify my taxes? Also, for those who already use Amazon Associates, do you use your personal Amazon account or do you create a new one for all author-related thing?

Thanks!