Essential aspects of tasks in a project plan include their duration and order of occurrence.
Task links, or relationships, cause the start or end of one task to affect the start or end of another task. A common task relationship is a finish-to-start relationship in which the completion of one task controls the start of another task.
In Project, phases of a schedule are represented as summary tasks.
You can document additional details using task notes and create hyperlinks to the Internet.
The Project Information dialog box (Project menu) is an excellent way to observe the key values of a project plan, such as its scheduled finish date and duration.