If you are looking for a first rate podcast on WWI, try Dan Carlin's Hardcore History. I have listed it before but thought some might have missed it. Extremely well researched.
http://www.dancarlin.com/product/hardcore-history-50-blueprint-for-armageddon-i/
That dude is incredible. Very intelligent, and offers great analysis and insight into history. He somehow incorporates a lot of psychology and human condition into his history without dropping too much of the historical details.
Currently working on his King of Kings series.