Hi Cyber Forensics can be selected as a field in many ways -

1. After completing Bachelors in IT or computer science you can opt for Masters in Information Security/ Cyber Forensics. there are deemed and private organizations who give valued certifications like - MSc in Digital Forensics and Information Assurance or M.Tech in Cyber Forensics and Incident Response from Gujarat Forensic Sciences University. There are few more universities like Raksha Shakti University, PES University, DIT, IFS- Mumbai, IIIT Allahabad, SRM Univerisity who provides M.Tech Degrees.
2. Some Certification like - CCFP,CHFI, AccessData - FTK Examination, EnCE, Data64 provides few certificates, SANS Forensics.

The best way is to join a company who practices information security and forensics.

But i suggest you also go for Security concepts so you would become good at forensics. As it is said a Investigator Should have skills of hacker to find the evidences.

All The Best.