if you're learning you want to keep it really really simple. the one key piece of advice is to hit it with both feet at the same time with your feet a bit wider than shoulder width apart.
a lot of people say to hit it with your downhill ski first but that makes it complicated. if you hit it with your uphill ski first you'll eat shit. therefore, BOTH SKIS AT THE SAME TIME.
apart from that just look at the end of the rail and fail less each time!