This document provides a tutorial for using Postcron, a web application that allows users to schedule social media posts across multiple platforms like Facebook, Twitter, and Instagram. It outlines the basic steps to create an account, connect social media profiles, compose a post including images and text, schedule the post for a future date and time, preview how the post will appear, and check its publishing status. The goal of Postcron is to help users save time by scheduling multiple posts in one place.