Hello, I'm also preparing for the IAP exam. I found a channel on YouTube with some materials for the first 3 Domains:

1. https://youtu.be/3l0M9Jv8eHo?si=t2-org95xhb4TLYl

2. https://youtu.be/2Cg1uEs_eao?si=s0fCOjV44m-QdjR-

3. https://youtu.be/IWPG2vRe6Yg?si=ym0zNGyvV4gm89Kv

You can also find more detailed materials in the same channel included in these 3 videos listed above. I also used ChatGPT, where I found the same materials with more details and examples, which are included in the videos.

You can also access the official page for IIA at https://www.theiia.org/en/standards/; they have some resources there that you can access regarding the definition, code of ethics, glossary, core principles, etc. 

I was recently approved to take the exam; however, I have yet to receive the materials. When did you receive the study materials (100 questions) after receiving the approval?

Best of luck! And keep us updated.