Who am I and what do I do?

I am currently in my last year of high school, I hope to one day be a pentester (See This.)

I usually spend my free time messing with Linux or doing web design and programming.

I believe all software should be free/open

Open source/Free software means that anyone can read the uncompiled source code, and make changes to this source code, software like Windows and macOS is closed source meaning you cannot read the code fully verify what your computer is doing. Programs can also be proprietary or open source, proprietary software is a money making scheme, it only exists for the sole purpose of making the creators money, this can exist either through selling customer data, or by selling the customers a license key. For this reason I use GNU/Linux, an open source free operating system that is used in 97% of the worlds websites.