Just start with the free CC cert from ISC2. It's basically just an introduction to Infosec theories and terminology.

From there you have to decide if you want to work in analytics or GRC (governance, risk, compliance). First is more tech oriented and second is more policy and documentation, although many roles combine the two.

If you want to go the tech route, get your A+, Network+ and Security+ from CompTIA, then you can pick one of many fields like networking security, systems security, and dev security.

For the GRC route, if you're in the US the NIST 800-53r5 publication is a great place to start, although it can be difficult to translate their vague wording into what work needs to be done.