Nice! I've been hearing awesome things about Godot... might have to give it a look one of these days. Thanks for the link btw... definitely worth a read!
If you want to learn GDScript I'd recommend you start by reading the step by step guide in the official documentation https://docs.godotengine.org/en/stable/getting_started/step_by_step/index.html then play around for a bit and watch everything on the Godot tutorials channel starting with this series