Google has been posting a number of sessions from Google I/O on YouTube. This one is about monetizing Android Apps, so if you're an Android developer, and couldn't make it to the conference, you'll probably want to give this one a watch. It will require nearly an hour of your time.
"There's more than one way to make money with your Android app: Paid apps, in-app billing, advertising, and so on," Google says in the description. "This session covers the subject comprehensively, with details on the monetization tools in Google Play and a close look at the AdMob SDK, ad network mediation and Google Analytics. Walk away armed with knowledge on how you can make more money, get more users and gain more insights."
I'd suggest keeping an eye on Google's GoogleDevelopers YouTube channel for more videos like this, if you're looking to get better as an Android developer. There are already some other videos posted that you may find useful, and there will no doubt be plenty more as the event rolls on.
With Jellybean unveiled, there will be lots of new stuff to learn.