Hello, thank you for reaching out to me, First of all the best for your examination.
Now, I'm coming to your questions, I don't utilise any study materials to prepare for the exam. I'm only using an isc2 self-paced training course, however my existing knowledge of cyber security is assisting me in passing the exam.
A lot of people recommend taking Thor and mick chappal video course but didn't take that because I don't like to spend my money on this because so many security professionals post their ideas on Google and YouTube. I strongly advise you to take an isc2 self-paced course to learn the principles of information security. Also, if you need to understand the security fundamentals properly and ask yourself how it was correct, where it was used, and how this helped to protect information it's really helpful not only for this certification but for all of them. Furthermore, the CISSP book is useful for referring to topics if you want a detailed explanation and clarification of your doubts and whatever questions you have searched for on Google.
We are all extremely welcome to ask questions in the community, and everyone here is incredibly supportive.
