I read Call My Agent all the time. It's clever, witty, entertaining and full of useful information. Can't ask for more than that! Some of the information might be obvious to more experienced writers - but then again how easy is it to forget or overlook the obvious. I regularly learn something I never knew or had forgotten.

Here are some of my favourite recent posts:
Advice from James Patterson A reminder that writers must be storytellers.
The Commonwealth of StoriesA thought-provoking post...