being fairly new myself, takeoff is easy. get lots of room, make sure the plane wont flip (if youre not on pavement), get up speed and gently pull up. simple. If he can do basic flying, make him takeoff himself and fly...and you'll have to land it. As you land, talk him through it. my uncle did 4 landings, 2 i watched the plane as he talked, and the last 2 i watched the transmitter as he talked through it and when i tried it, i nailed it.

repitition is key. once he gets the eye for distance, wind, feel etc, he'll be fine. have him practice approach, touch and go's and landings on the simulator so he has a slight feel for it.

as for holding alt well, he'll just need flight time, its something you have to have hands on practice for. jerky sticks is just because he hasnt flown enough and cant feel what the plane does. Just bring batteries/fuel and let him fly and fly and fly. He'll calm down on jerkyness, retain alt better, and become comforable flying.

just remind him, its only a cheap r/c plane, no pressure whatsoever.

ALL that is how i learned and solo'd so it should work for your buddy as well

Good Luck
Michael