Did the home study route myself. It's hard. You will be trying to teach yourself totally new concepts.
Not like school where you can sort of know stuff and get through the exam. If you don't really understand the material you will come unstuck.
I underestimated the amount of study required, and only just passed my first CPL exam. Bob Tait practice exams helped a lot, especially for the harder exams like performance. If you can pass them you can pass the CASA exam.
When it came to IREX I admitted defeat and did a week long theory course. Best decision I could have made. There is no way I could have taught myself that syllabus.
Golden rule is, if you think you have studied enough, study some more.
Good luck
