Try to land the booster as close as possible to the center of the droneship, while keeping your speed below -3. Don't touch the water! Move the droneship with left and right keys, and fire the engine with the up key. RP1 is your fuel level. If you don't get it on your first try, don't despair. It took SpaceX about a dozen tries before they started landing their boosters. the second stage var is the speed of the second stage