SE sites operate differently from most forums, and it's common to point new users to a link to give them an overview of how the site works when their first post indicates that they aren't familiar with the basic concepts. What link is the best to use for this purpose?
I've always seen the site tour used for this, and that's the link I normally use. Recently, I've seen new users being pointed to the code of conduct. It's certainly good for new users to be aware of those expectations, and perhaps that link should be included in the site introduction (maybe even referenced in the site tour). But if we're providing just one overview link in a comment, I'm wondering if the code of conduct is the best for this purpose.
I've seen it used on a couple of recent first questions, and it struck me the wrong way. Neither question contained an obvious issue that is addressed in the code of conduct, so it wasn't clear why that was the link being presented. Referencing that link seems to imply that the new user did something wrong and is being gently educated as to site expectations for behavior. If I was a new user, I would find that more confusing than helpful, maybe even a little off-putting to receive apparent guidance about behavior that didn't violate any rules. Even if I didn't take it personally, it would leave me with the impression that behavior rules of such apparent importance might mean I would need to tiptoe on eggshells to use the site.
Users should be aware that there's a code of conduct, but I don't see that as the general overview of how the site works that's conceptually different from other sites. Should we embed a reference to the code of conduct within the site tour, and use the site tour as the overview?