Avalanche accidents are confusing, tearful experiences. Executing a successful rescue requires that you control your emotions and focus on the rescue. A successful rescue begins before you leave the trailhead and continues until the rescuers and victim are safely in the frontcountry.
The keys to a successful rescue are training and practice, training and practice, and training and practice. Don't postpone it any longer. Get together with your buddies and practice. When the shit hits the fan, when your friend or lover is beat up and buried, your training will help you achieve the best possible outcome.
This page explains the tasks that take place before, during, and immediately after an avalanche. Subsequent pages explain how to search the avalanche using your transceiver, how to locate the victim using an avalanche probe, and how to extricate the victim using a shovel. These instructions are concise. You'll need to take a course and read a good avalanche book.
The statistics aren't in the victim's favor. They show that ~25% of avalanche victims are killed by trauma. Of those that survive, more than half will die within the first 15 minutes. And 90% will be dead within the first 40 minutes. When all is said and done, only 30% of fully buried victims will survive.
This data makes your objectives clear. Quickly locate the victim and access his or her airway.