Build up to a single rep max continental clean with an axle. If you feel strong press it overhead. Here are 2 videos of the continental clean. For the continental clean you will deadlift the bar with a mixed grip. Then hang clean it to the top of your belly. At this point you will need to lean back and stick out your gut as far as possible. While you're leaning back you need to "pop" the bar up and switch your grip to a double over. From there you will "pop" the bar off your belly up to the rack position. There are several stages to this lift so you need to be patient. Practice light and slowly build up in weight.