Welcome to the Engadget holiday gift guide! Picking presents for friends and loved ones is never a simple task, and with thousands of options for each category, buying technology can be an especially frustrating experience. We're here to help. Below you'll find today's bevy of curated picks, and you can head back to our hub to see the rest of the product guides as they're added throughout the holiday season. We've also teamed up with AT&T to give away one hot smartphone with each and every guide, so scroll to the end for today's prize, then leave a comment to submit your entry! For digital cameras, 2012 has be