If you didn’t attend Convergence 2013, you can still watch the recording of the keynotes and breakout sessions by registering for the Virtual Convergence. Best part is that it is completely free! You can signup for Virtual Convergence here: http://presentations.inxpo.com/Shows/microsoft/MSConvergence/3-13/Registration/Registration.html.
For attendees of Convergence 2013, there is a better experience to catch-up on all the session content that you might have missed or slept through . Besides the virtual convergence website, if you log back into the Convergence attendee website, you can see the session recordings along with PowerPoint presentation decks in the Schedule Builder which also allows you to nicely slice and dice through all the content!