To upload the syllabus, click on Syllabus  (located on left course navigation), then click Edit  (located at the top-right).
The syllabus description is where you can post your course description, a brief introduction, class guidelines, weekly reminders, and other important information.
You can link to your Syllabus by uploading it into Course Files as a PDF and embedding the document in the Rich Content Editor. Canvas will automatically create a preview of your document so your students don't have to download it before reading it.
Highlight  the text you want to link your syllabus to. Select the Documents  drop-down and select Upload Document. Select your Syllabus from your File Explorer and Upload it.
When done, click Update Syllabus. The Course Summary below is auto-populated based on Assignments and Events within the course.