For podcasts I have two “you should really, really listen to this” recommendation:
Photography Daily – relatively short episodes with interviews, feedback, etc. I really enjoy this podcast
I also listen to these:
Before going into YouTube I want to give a recommendation: if you see anything that includes Joe McNally (wikipedia), David Hobby – The Strobist (wikipedia), Steve Simon or Zack Arias you should really watch/read it – you will learn something new !!
There is a huge number of photo channels on YouTube, I have probably only seen a very small percentage of them but my four favorites are:
Others that I watch includes