I’m about to graduate with a PhD degree. Can I still access the ebooks through the library websites from home?
I assume you mean whether you can still access them as an alumni.
In most cases the answer is no – as an alumni you will not be able to access e-books from home. It is really dependent on the vendors and most e-book vendors restrict usage to current sfu faculty and students. Some vendors may allow unrestricted access but not many so in most cases you are going to be asked for authentication and will be blocked.