A few of the things I recommend and regard highly. Things worthy of mention and referral. Things I use that benefit me.
Free and Open Exchange of Knowledge
- For advanced Linux tips and info, NixCraft is so great — www.cyberciti.biz
- Command line awesomeness — www.commandlinefu.com
- For answers to questions of all kinds, specific to system administrators and programmers, the StackExchange family of websites helps out a lot —
- Programming — www.stackoverflow.com
- System Administration — www.serverfault.com
Perl
- MetaCPAN — Gateway to the Comprehensive Perl Archive Network, and full-featured documentation website — www.metacpan.org
- Perlbrew (self-contained, per-user, stand-alone Perl installations with a private @INC and cpanm) — perlbrew.pl
- cpanm (CPANminus) — the way to install Perl modules from the CPAN easily and pain-free — www.metacpan.org/pod/cpanm
- PerlMonks — Perl discussion forum and help website — www.perlmonks.org
- Perl IRC — irc.perl.org ( port 6667 )
- Perl Maven — Perl learning materials, tutorials, articles — www.perlmaven.com
Linux
- Debian — The reason Ubuntu exists (And Crunch, and Arch, and Mint, and Gnoppix, and…) — www.debian.org
- CentOS — The free version of Red Hat, the latter being the the most-likely reason that Linux is so wildly successful in the Enterprise — www.centos.org / www.redhat.com
- There are others you can seek out, like Fedora, OpenSuse, Gentoo, Ubuntu. Each has a philosophy, and most come from a common parent (the usual ones being those mentioned in the bullet points above).
- The Advanced Bash Scripting Guide (if you’re going to run Linux, run it like a boss) — www.tldp.org/LDP/abs/html/
Aquaria (Aquariums and Fish)
- Carl Strohmeyer’s AAP — www.americanaquariumproducts.com