The entire 3-hour Google I/O 2014 keynote is up and ready for your consumption. featured talk of Android L and all of its redesigned goodness through Material Design, Android Auto, Google Fit, Android TV, and of course, Android Wear, then I would suggest at least taking a look at the first two hours.
Should sitting down for 2-3 hours not sound like something you want to do, here is a list of stories to help catch you up on Google I/O day 1.
