This isn't "new" information, though it was new to me this week. I came across this excellent set of youtube videos, 50 substantial yet brief overviews of key IIS topics from IIS/.NET/Windows guru Scott Forsyth.
I offer the list of topic titles (and links to them) below, and have even created a YouTube playlist with them, but note that the links below go to pages that the author had created where he offered a helpful introduction to each video (more than appears in the Youtube description for each).
I had also wanted to offer here this brief overview of them, to set the context and encourage you to view them, so as not to dismiss them if other tech video series haven't impressed you. Whether you're new to IIS 7 or 8, or an old hat user, there really is something for everyone, including wonderful little tips he shares in passing during most videos (which average about 10-20 minutes each).