I don't have any specific videos/resources to share, but here's what i'd do: First, find a beginner tutorial for Godot on YouTube. You want to find one that explains everything in a clear way. If the video tells you to do something, but does not tell you why to do it or how it works, you should find a different video. It is essential that you learn how and why things work, that way you don't develop a dependency on tutorials. If the video does these things, it should be pretty good! I would also recommend taking notes while you watch the video, that way you have a cheat sheet for later when you are not using the tutorial. After you finish the tutorial, I would recommend adding random things to it. Any fun/funny little things you want! This could be sound effects, maybe change the character art, anything you want (but keep it simple). During this stage you will have to look up how to add some things, and that's completely fine! Just make sure you understand exactly what you're doing and how it works. If the thing you're trying to add becomes too difficult or complicated for you, give up on that idea and add something else. Your biggest goal is to not get overwhelmed during this whole process! This is probably the hardest stage of learning Godot, but when you  overcome this part, it will only get easier! Also your experience with Unity might help you a little. If you have any confusion don't hesitate to ask me, I'm really excited that I have the chance to help someone learn Godot!