61064761's Advice:

I taught myself everything I know so my recommendations probably are a little lacking in comparison to a professional curriculum, but I'd recommend starting with simple hardware stuff. CompTIA A+ material basically. Study a bit of electrical engineering basics (I mean the real basics like the topics discussed in the book CODE: The Hidden Language of Computer Hardware and Software) and install GNU/Linux, preferably as a native OS rather than a virtual machine. Learn about its file system hierarchy and get comfortable with the shell (BASH or ZSH) and learn shell programming. You do need to know programming if you want to be a self sufficient security professional. It's very easy to migrate from shell programming to Python so that's why I recommend you get comfortable with the Linux terminal as writing scripts and using terminal utilities will be important. While learning Linux but perhaps before learning Python, you'll need to learn about networking. Bascially everything that CompTIA's Network+ course covers. In fact, you might even want to get certified in Network+. There are plenty of YouTube tutorials on this material. Professor Messer might be a good starting point. After learning the networking basics, I'd recommend installing the GSN3 VM in VirtualBox and emulating a virtual network to actually put what you learned into practice. Use the VM because you'll want to set up firewalls and other stuff. Study the stuff covered in the CCNA certification exams. Maybe even take the test and get certified. Throughout this time, you should continue with your programming studies. Shell programming and Python are important, but so is learning C, C++, and a bit of Assembly. It's important to actually understand how the Linux Kernel works. Beyond that are the specifics. Becoming familiar with certain shell programs and most of the stuff covered in the Security+, CISSP, and LPIC exams. It's a long road but pretty much all of the material can be learned for free.