Any suggestions on study and prep resources to attain ccertification a certified hacking forensic investigator.
Assume your talking about low/no cost options as opposed to courses? If so here's a couple that might* fit:
https://www.sans.org/reading-room/whitepapers/forensics/
https://www.amazon.com/Digital-Archaeology-Art-Science-Forensics/dp/0321803906
*As I'm not one, and not likely to ever possess the CHFI ...