I don't have a ton of experience, but what i do is go off the jump as flat as you can get, but i always end up on a slight edge, just try your best. If it's your first time, don't pop really hard, but get a feel for jumping off a ramp. You don't wan't to ollie so much as just jump flat, off both legs.
Now, as far as the landing, just lat as flat as you can, with the tail landing at about the same time as the nose, maybe a split second sooner if it's a flatter landing. You want to land flat, and just carve a little bit once you land in case you're afraid of catching an edge. Personally, i carve toe edge but that's just my preference. Basically, you just wnat to land flat and then get on a slight edge to avoid skidding out.