each button is a direction, by the way. Dragging one part just shows the effects of going in that direction -Green 0 is prograde, or pointing at the direction you're heading. Speeds you up -Green 0 with X in it is retro-grade, pointing in the opposite direction you're going. Slows you down -Purple markers are going Perpendicular to the orbit, if the line was your orbit, the ^ would be the direction ----------------------^----------------- for example -the Blue marks are Vertical to whatever body you are orbiting. Pushes you away from the planet/gravity my best advice is to just pull each one and see how it effects the orbit. Just think of it as directions of thrust How to do them is, on the nav-ball (orange and blue ball on bottom of screen) is a blue mark, you point your rocket at this blue mark. Next to the nav-ball, is a timer. That counts down to when you hit your maneuver node, and the est burn time is how long you'll have your engines on.