Best resources to learn Linux and the terminal as a beginner

Hi guys, I’m a 20-year-old electrical engineering student. A few months ago I bought a Raspberry Pi and started playing around with it.

My goal is to code my own HTML website (a portfolio) and host it on the Raspberry Pi. I’m currently using DietPi (Debian-based), but I’m a complete beginner when it comes to Linux distros, the terminal, etc.

I’d like to properly learn how to use the terminal and Linux in general first, and then apply that knowledge to my project. What are some good ways to get started and eventually become comfortable with it?

I’m a big fan of learning from books as well, so I’m open to any good book recommendations. Thanks!