Here is a link to a recommended reading list. This appears on a blog by our former colleague and expert on boys’ education, Mark Roberts. https://markrobertsteach.files.wordpress.com/2015/08/reading-list-flyer.pdf
Your son also has a reading list in his planner.
Audible have made all of their online audible books free for the duration of schools being closed.
Please register here and enjoy as many books as you like: https://stories.audible.com/discovery
No log in or bank details are required.