"Advanced" SEO is a phrase that gets thrown around, but we rarely practice truly advanced tactics.
Advanced SEO isn't rel canonical or nofollow.
Real advanced SEO cuts through abstraction. It doesn't add layers of stuff to hide SEO problems. It fixes them.
This is Ian Lurie's slide deck from Digital Summit 2019. Don't let the length scare you. It's packed with links, tips, and step-by-step to-dos.