Favorite Ruby on Rails resources?

One of my goals for 2020 is to learn Ruby on Rails. Any Elphas Can Code members have any good recommendations on what resources to use? Feel free to share anything you used to learn Ruby on Rails including any tips you might have.
I relied heavily on the RoR guides when learning. I think that the documentation is very friendly!
I love the RoR guides too! I go to it whenever I have to pick Rails back up or just to refer to in general.
I used the Hartl online book/tutorials to ramp up on Rails. I was just googling to get you the link and it seems like it's behind a paywall now though. I think this is the one:
Hi! I don’t have any favorite resources yet. I have used these frequently in the past.
You can try the Odin Project. They have tons of resources that helped me along.
@britishpandachick is great for ruby itself, very nice and detailed, also if you are starting ruby on rails it can be nice to know what parts are ruby and what parts are rails.
I really like "Agile Web Development with Rails". Here's a link to the Rails 6 version haven't read it yet but I want to branch into React and bought myself one on Rails and React:
Also, if you get stuck on any concepts feel free to ping me. I'm happy to give pointers!