I'm having trouble finding my way around Lemmy

Hello. I recently joined. Some questions. How do I view private messages (that being those I sent to a member, rather than posts to a community)? I've looked in my profile, but it's not listed there. I only see "Overview", "Comments", "Posts", and "Saved". "Saved" shows nothing, and both "Overview" and "Posts" only show two recent posts (I've posted ten times since joining). There seems to be no category for Messages. Anywhere. None. Zilch. And Comments likewise is showing nothing, despite the fact that I've commented on a few topics I've found here. And it doesn't matter if I choose "old" or "new" or "top all time" filters, it simply shows nothing.

Is there some sort of documentation that explains how things work? Because for me, it has not been a very intuitive experience.