I currently hold my PPL-A in Canada, and would like to begin the
"book-learning" part of my training for the Instrument rating.

Suggestions for CANADIAN reading material and text-books for this from
qualified and experienced pilots and or instructors out there would be
much appreciated.

Thanks ...

You'll need the Air Command Weather Manual, and Instrument Procedures
Manual. You'll need a CAP, as well as the CAP GEN. I also got the
Culhane Manuals. All of these are available from the Avitation World
web site. www.aviationworld.net