No, I’m not, unless you consider moderators as part of the team. 
Well, Manjaro is only the name of the distribution, and while distributions all pretty much have their own configuration, their own set of defaults and their own look & feel, the underlying operating system is GNU/Linux, which itself is a UNIX-family operating system.
Myself, I have been exclusively running GNU/Linux on my own systems for over 23 years already, as well as on servers in a now defunct IRC network. And before that, I already had some minor experience working with minicomputers — think “mainframe but smaller” — that ran proprietary UNIX versions.
There are many UNIX- and GNU/Linux-specific websites out there, and there is also plenty of online documentation — some of which is quite outdated, but they do still help you at understanding the basics.
Good places to start would be…
- the Manjaro Wiki
- the Arch Wiki
- the Linux Newbies site
- the Kernel Newbies site
- this excellent tutorial by @Fabby
