I'm coding in GDS for about 2 days now. I've used different engines before but godot is the first one I really seem to like and enjoy using, I just need to learn the main coding language. I theoretically know what and how the code is supposed to work I just don't know how to "translate" it to GDS. Maybe you remember how you've learned this language or maybe you wish you've learned it in some way?
First I made some easy starter project from the web, maybe use the one in the docs, to get comfortable with the sytax, but chose something you enjoy but isnt difficult. Then I used the Godot Documentation and just started coding. Its really about testing it out and I find the docs really helpful for that. Sometimes i watched, especially when i didnt knew anything about tilemaps, some videos how you are supposed to use it or the godots node system in general.