The document provides instructions for interacting with and contributing to ComPart blogs. It outlines how to read existing blogs by selecting them from the toolbar, comment on posts by typing a comment and publishing it, and write new posts by signing in, selecting a blog from the dashboard, entering a title and content, and publishing the post. It also describes how to edit existing posts by selecting the blog, clicking "manage posts", and editing the post content before publishing or saving as a draft.