Google tech lead Maile Ohye posted a comprehensive video instructions on Google Webmaster Tools URL parameters usage.This is a fairly advanced feature and she recommends it for advanced users only. Incorrect usage of URL Parameters feature can result in page/site being dropped from Google’s index. Be careful!
On September 21, 2011 Matt Cutts did a live YouTube video broadcast with webmasters.
Matt Cutts, a software engineer at Google, answers user questions.
Michael Wyszomierski from Google posted the video.
If you’ve recently set up Google Analytics, but aren’t sure how to start reading and acting on your web metrics, I’ve collected these official Google Analytics Videos to help you. These video tutorials are covering every aspect of SEO anything from GA introductions and tracking code installation to filtering and regular expressions.