Best Practices for WordPress User Roles

Explanation for deciding user rolls

Administrator – add, edit and delete all posts. Install, edit and delete plugins and themes. Create, edit, change user information, including changing passwords and delete user accounts.

Editor – full control of content sections, can add, edit, publish any posts, moderate, edit and delete comments.

Author – write, edit, delete their own posts.

Contributor – create, and edit their own posts, but not publish.

Subscriber –  can log on to wordpress site, update profile and change password. Can not write posts, view comments or anything else in WordPress admin.