I am not a professional programmer but I have found some good advices here.
Apart from that, I think it’s also worth looking into the relationship between code structure and the world model (for my part, I make a clear distinction between worldbuilding and storyweaving). Also, programming IF (I’m a newbie) has led me to explore software engineering, and there are some useful concepts to pick up there (even if not everything seems strictly applicable): the need for strong exhaustive testing, segmenting the roles of phrases, refining inheritance logic, etc.