Just saying: If you need a step for step tutorial to make something available worldwide, you shouldn’t.

There is a reason why an apprenticeship for sysAdmin (not even going into software engeneering) is 3 years of school and work full time.

Also, as someone who has actually gone into this kinda deep, it is simply not feasable to actively maintain your system for CVEs, hardware and software, and still work AND have a social life.