Errr, why are you apply for CTC if you already hold an AME licence? If it's from another member state, perhaps you should be speaking to a Part 147 school, and seeking Recognition of Prior Learning. They are all listed in AAC Part 9-66.
If you want to study for the sake of more learning, the CASA syllabus list 'suggested' textbooks. Most people I know managed to track down some of the old Q notes.