I'm an autodidact on every informatics topic I know.
I begun to program on my early 6 years old with an spectrum, trying to edit binary code on cassettes. Now, I'm expert or have much experience with C, C++, Python, Perl, PHP, JavaScript and other languages.
I've also improved my sysadmin knowledge, from my MS-DOS'ish on early 90's things to my actual Linux administration. It goes from virtualization/containerization of systems, mail, LAMP, networks, security, encryption, monitorization, distributed filesystems, continuous integration and deployment, and a very long etc.