1 - I don't use linux as my OS (operating system) (I never found a distro and software I liked), just all the tools that come from it. I am attracted to open s

1 - I don't use linux as my OS (operating system) (I never found a distro and software I liked), just all the tools that come from it. I am attracted to open source because it is free, as in beer, and free as in speech which lets me modify if I want to (and had the skills). 2 - A "Linux User" is someone who uses linux as their OS on their desktop or laptop or maybe server. I don't think Android on a phone counts. 3 - What kind of relationships? Not that I have any of any kind. 4 - If I am speaking to a hacker I will use the original definition of a hacker: someone who tinkers with a system. If I am speaking someone else I will use the more popular definition of a hacker: someone who gains access to a computer system without permission. I don't think the "hat" label can be applied to someone like me who does not do remote access testing. 5 - Yes. My largest contribution(s) is(are) probably already on your computer in FFmpeg's libraries. I wrote code for writing Vorbis Comment blocks, some assembly for its yadif deinterlacer, and some assembly for flac encoding. I did them because: I wanted metadata writing in my flac files; I was interested in learning some assembly and SIMD; and because I wanted faster flac encoding. 6 - "Is there activities/ gathering that you are used to do with other people of the linux community, around open source project or only for fun?" I don't understand that question. 7 - I suggest that you start by trying to contribute to something you use. If you use it already you probably already know how to use it, what features it might be missing, or what bugs might be present. Okay, many projects may not have low-hanging fruit for you to pick. This suggestion also requires that you can already program at some level. Many projects would also welcome contributions to their docs. If you want more advice on starting I suggest you post a comment that gives more info about your skills, interests and maybe what you want to learn. P.S. Your English is already decent, it just reads like you need more practice.