That's a nice start for a first solo project! You got a lot of things working, even if the polish is not there yet, I feel like you're getting a good grip of it all. I think it lacks some features but the ones you did implement seem to be working fine.
You can find more more tutorials for godot on youtube with PlayWithFurcifer, (GDQuest and Godotneers as mentioned earlier), Heartbeast, and FinePointCGI. I think there's a lot more of them, but these are the ones I like ^^
Good job, keep learning :)