📘 Best growth marketing books for 2020?

I've seen Traction and Start Small, Stay Small recommended, but they came out in 2015 and 2010 respectively. Some reviews on Amazon suggest they might be outdated. How true is this?

Could anyone recommend any books or resources they think are great for growth marketing as an indie-hacker in 2020?

I'm currently planning on using Julien Shapiro's Growth Marketing Guide, which looks really good. I'd be keen to hear what others think who've used this.

Context is I'm a software developer building a site to keep film lists. I've got no marketing experience and looking for a practical framework to start growing 🚀