Clicked this thread, was disappointed. :-(
It makes me sad to see that the rather hostile GNU/Linux communities are taken as an example for "the Unix community" which is so much more open for newcomers. No religious bashing, neither "Windoze $uck$" nor "Vim vs. Emacs" nor "THAT Unix is worse than MY Unix!". (Also, Unix's manpages are great while Linux's are mostly not.) Plus, "Unix" is not necessarily community-driven; AIX lives through IBM's business customers, not through a pseudonymous bunch of hobbyists.

You might see how there are major differences between them. May I recommend a second podcast for real Unix users?