There are many good resources for godot. Look up gdquest, or the official docs on their site. Gamefromscratch has some godot content too, and zenva had some good courses that were included in humblebundles before (not currently, but might be again in the future).
I've no idea why there's another comment suggesting f# - godot uses gdscript (its own language which is pretty easy to learn, like python), and if you don't like that you can use other languages (but start with gdscript, it's easiest to start with).
For game dev in general, start with opening a window, then draw something in it. Then make it move, then make it move under control of the user. Then make it so something when it hits something else (bounce off a wall or collect a coin). If you can do all that you're in a good place to start expanding into something more interesting to you. A visual novel seems like a good first project, if you're good with making the art and story. Good luck and have fun.
Because the writing at the top is the right way round, duh.