yeah
jump on like normal with a wide stance, and gorilla stance a little bit with your weight downhill
make sure you turn your skis completely perpendicular to the rail and think about catching the rail right under the balls of your feet and keeping it there
jump as little as is necessary to get on the rail, otherwise youre gonna be coming down with more force than you need (and maybe more than you can handle at your level)
for kinks (assuming youre talking about a downkink, for instance a flat to down rail) do all of the above but right as you get to the kink, push your weight and feet down the way you would pumping a transition so you stay on the rail and don't fly off/over it
most importantly, like this dude said, look at the end of the rail. as with most active things, your body goes where youre looking