Introduction to Nuclear Engineering

For CANDU reactors in particular, this is a decent starting point: https://canteach.candu.org/Info/SitePages/Overview.aspx For nuclear reactors in general, this site has a lot of interesting topics: https://whatisnuclear.org/ If you really want to start a deep technical dive, Introduction to Nuclear Engineering by John Lamarsh has been a standard introductory textbook for over 40 years: https://www.amazon.com/Introduction-Nuclear-Engineering-John-Lamarsh/dp/0201824981