Four line kites
Four line kites have the advantage that you can fly them forward and backwards.
You have two different type, those
with spars- often looking like a Revolutin kites or similar which can even do proppeller spins and tricks like flic-flac, backflips and axels and then those
without spars- also called foil kites (you can get them also as a two liner). No real tricks here, they use 4 lines for the control because they are mostly used when on buggies and mountianboards.
With both versions you have some kind of aluminium tube (around 25 to 40 cm in length - 6" to 10")
where the steering line is knotted to the top and the brake lines to the bottom in each hand.
Mostly you grip them on the upper part.
The difficulty for most peolple is that you steer mostly from yoour wrists and the hand and especially arm moovements are very minimal.