First you have to define what you’re most interested in. There are many areas within a network that people target. These areas all have their own specializations. Do you want to learn about web apps? Software? Operating Systems? etc.
If you want to know the foundation of IT knowledge that will help you with whatever “hacking” you get into, or to help you decide, you may want to consider the following:
Network+ level of networking (Route/Switch concepts, IP scheming, etc.)
Basic Windows architecture (Active Directory, LDAP, File structure, Registry keys, etc.)
Basic Linux architecture and commands
Basic Web concepts (HTTP response codes, How a webapp interacts with its server, how databases work, how sessions are handled, etc)
Once you feel comfortable describing these technologies in a simple manner to someone else, you’ll be able to get a feel for what you want to focus on first when it comes to their security.
I know a lot of people in the OffSec realm are pretty elitist about certifications and like to hate on CompTIA (which is understandable)… however Network+, Security+, etc are great foundational certs if you’re just breaking into IT, let alone cyber security. I really recommend at least being familiar with their content.