Hi, @bretg , to make the People tab in the course navigation visible to students, you'll need to adjust that navigation item in the course settings, as described in How do I manage Course Navigation links?
Turning to your second question, the answer to this might depend on whether your school has enabled personal profiles or not (How do I edit my profile in my user account as a student?) I did a quick test in a course that has profiles enabled, and determined that a student can see whatever the user has provided on their profile. The email address is not listed there by default, but a user can choose to customize it.
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