Finally starting my career in SEO

Hi all,

I start my job as junior SEO in about a week and half. I have absolutely no prior experience or knowledge about SEO.

Should I take online courses and try to learn as much as I can the week prior before starting? Or is SEO something they will fully train me on and I learn as I go?

What have your experiences been like in the start of your SEO career? Any advice would be much appreciated!