When you start a game, you get a 30 second (I think) Ball Saver. With a bit of practice you can usually get at least one full kickback happening within this time, and should be well on your way to the second kickback.
At the start, I ignore everything -- including the Sampling mission -- until I've shot the left and right ramps enough times to light kickbacks. Unless it's an easy shot on the mission, in which case I'll take that because I know the mission will return the ball to one of my inlanes, awarding me a lane light.
FWIW, as the guide says, your aim should be to always have 2 kickbacks lit, and 2 lights lit on each side. Once you have a Kickback in place, don't let the ball light the third light! (It will only award you 20K points, and you'll have to go and re-light those lanes.)