Owning the PDF is not enough. Many students download it, save it to their desktop, and never open it again. Here is a study strategy using the Kevin Smith method:
Many high schools in Gauteng, Western Cape, and KZN stock multiple copies of his work. Ask your librarian if you can scan specific chapters onto a USB drive. kevin smith maths grade 12 pdf
These are common topics found in senior secondary/grade 12 math PDFs: Owning the PDF is not enough
(Provide worked solutions in a study PDF or teacher guide.) Calculus
The book is organized logically to follow the school year, but with a structure that makes it easy to revise specific topics.