Titles within the library's collection may be linked within your course site. For more detailed information, including a link generator, see the Canvas help guide. You may not, however, link to Harvard Business Review articles. These must be added using the Harvard Business Publishing Canvas integration.
You have a couple of options for articles that you find "on the fly" throughout the semester.
If you want to continue to use the article in future semesters and it is not available through the library, it should be added to your course pack.
You are responsible for copyright permission for your own web site. If you do not wish to obtain permission to upload it, a link to the article in question is a better bet.
If an article is not available electronically, library staff will make a copy of an article from a journal in the library's print periodical collection to be placed on course reserve for students' use in the Library. Contact Emily Miles, x5604.
No, you may not do this unless you have received permission from the copyright owner. If it is a PDF from a library database, this is a form of contract and copyright violation. Database provider provide royalties to publishers based on number of article views. You must instead post the link to the article. For assistance with obtaining copyright permission for articles that the library does not have, contact your library liaison or Emily Miles.