Are you asking 'how it works' as in how it gets made and maintained, or are you asking what it is?
Discussion
More in the realm of wondering how it works. Any sources is greatly appreciated!
I found these with a quick search. The first one is one I remember hearing was good. Look forward to reading on this myself.
The Cathedral and the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary – Eric S. Raymond
Just for Fun: The Story of an Accidental Revolutionary – Linus Torvalds
The Success of Open Source – Steven Weber
Free as in Freedom – Sam Williams
Thanks a lot Tee, I'll definitely check these out!