Unix forums for learning Unix

I am learning Unix, and have questions to ask, I need some popular Unix forums where I can get some help. Could anyone recommend me some good ones?Thanks!

www.linuxquestions.org

www.linuxtoday.com

http://www.unix.com/

http://www.unixforum.co.uk/

Just hit up google seach: unix forums

Thank you, cid, your answer is very helpful!

Well, there's something you don't see every day. :wave:

;)