These guys used to produce notes and sample test questions.
Why Train Here - Why Train Here | Babcock Flying Academy
Pilot and Flight Crew Training School | Grand Central South Africa
Avex Air
Babcock and FTS are based at Grand Central. Avex is at Lanseria I think.
Grand Central is just up the highway from the CAA. As I remember the notes are pretty much of a muchness. I used all three and on balance preferred FTS. Why all three? Well, for super secret reasons the CAA only gave me one shot to pass the examination so I had to be sure I had all the falcons in a row the first time.
Good luck anyway. I think you'll find some of the questions quite tricky.
Here's an add on link to the Avex site. They did have a very clued up guy who would do private tutorials at some cost bit well worth the effort. Every right answer you squeeze out is worth quite a lot and if he is still around he'll be up to speed with the latest in tricky questions.
Study Notes - Avex Air