Re: simple question... maybe
On the true, handle rope attached to the skis, it is NOT attached to the boat, someone actually holds the end of the rope in the boat and lets go when the child falls. You can have a second skier right next to them to help hold them up and boost them out of the water.
This summer we are going to try without the handle to the skis rope, just the regular handle for our 10 year old, last year was his first outing.
I don't feel a bar between the skis is good either, ok for straight but can't turn well.
It also helps to practice on dry land, they get in the crouch position holding the handle and you pull them to a standing position, in the correct skiing stance, then move to the water with the skis on, do the same thing, just gets them aquainted with the feel. Then hit the lake.
Always get your rope straight from the boat to the skier with a little tension, then hit the throttle enough to pop them up, don't pull their arms out the sockets, with too much power, but also don't drag them, not using enough, plowing the lake. When they fall, always turn the boat towards the drivers side to they are always in your sight and of course always turn off the motor when dropping off or picking up.
Now starting with a wake board is a bit differnt, but do a google search or search here on how to do that, this has gotten wordy enough.