Add your syllabus to your course using the add resource/file option.
Editing includes many tasks including adding content, changing it, formatting it, and moving it.
Module overviews should provide a relevant and guiding introduction to the activities and expectations for the module. The overview can be considered as what you might say in the first 10-15 minutes if you were teaching in a physical classroom.
Resources may be added to any page in Moodle. Resources include such things as a file, a folder, a label, an HTML page, a URL (or link). These usually include static information, but can also be links to active learning resources from outside the course.
Blocks are items which may be added to the left or right column of any page in Moodle. Blocks include such things as Activities, Calendar, HTML, Logged in user, Messages, Navigation, Online users, People, Settings, Upcoming Events.