The document provides instructions for using Gigapan without logging in and describes the registration and login process for creating a free Gigapan account. Without logging in, users can view popular and recent gigapans uploaded by others as well as galleries of specific events. The registration process involves selecting the free basic membership option, entering contact information to create an account, and confirming account activation via email. Upon returning to the site, users can log in with their username and password to access their account.