Everyone has a profile page & you're able to edit yours by selecting "Settings" from the menu and then the "Profile" item, or viewing your profile page and selecting thein the upper right.
Profiles for Mentors are visible to everyone, profiles for everyone else are visible only to Mentors with whom you've scheduled a meeting (so they can know more about you.) Profiles are also visible to platform administrators.
This page allows you to identify yourself, providing information about your education, interests and skills. Information changed here is automatically saved.
Other personal account information, not visible to others, is settable under Settings.