We're here at beautiful Fort Mason, with San Francisco Bay and the Golden Gate Bridge as our backdrops, and Engadget Expand is about to kick off! We couldn't be more thrilled about this weekend's lineup, which includes fireside chats with innovators from Google, Kickstarter, OUYA and more -- not to mention our first-annual Insert Coin competition and -- wait for it -- Tesla Model S test drives. If you haven't purchased tickets in advance, don't despair: they're available on-site at $60 for a full pass, $40 for Saturday only (including access to our after-party, which you won't want to miss) or $30 for just Sunday. We'll be liveblogging a handful of sessions today, and you can catch all of the action from the Expand stage in our livestreams as well. Click past the break for a breakdown of both.