So, avoiding the discussion of what constitutes best practices, it's important to recognize that you don't know everything (which you seem to get), but also ide

So, avoiding the discussion of what constitutes best practices, it's important to recognize that you don't know everything (which you seem to get), but also identify the things you don't know and learn how to research them enough to handle your task, which is definitely more than Wikipedia but most often you don't need to be an expert in a thing. Unfortunately, if you don't have people around to grade your work, developing a sense of this can be quite hard.