Someone wanted to learn this too, so Grasp built them a personal learning path.
You can keep exploring this one or create a path like this one shaped around you.
Recommended resources
Module 1
Your First Steps in Godot
Module 2
Player Character and Input Handling
Module 3
Building the Game World with TileMaps
Module 4
Introduction to Functions and Camera Control
Module 5
Game Boy-Style Screen Transitions
Module 6
Interaction with Signals and Areas
Module 7
UI, Arrays, and Dialogue System
Module 8