PolishLinux for resources on comparing distros and getting the best out of various programs e.g. GIMP

Tuxfiles "Linux newbie help ... in plain English"!

 http://www.tuxradar.com/code for tutorials on using such stuff as Python and PHP 

PODCASTS

Ubuntu http://ubuntupodcast.net/ This is really more of a videocast

Ubuntu http://fullcirclemagazine.org/category/podcast/ 

PCLinuxOS - not sure if they have one

General - plenty - try: http://www.tuxradar.com/podcast