Okay so i just had my first two games, in the second i killed six turrets, is that good? or should i be focusing on people more?
Turrets are more important than people. But killing people can help you establish the dominance to kill turrets with less danger.
Although killing people as a primary goal late in the game is a little weird. Because of the risk of having the game turn on you if you cannot kill them, you would only try to make engagements a primary goal if you are way ahead. But if you are way ahead, you should kill the turrets because killing them is your actual goal.
Even if you are way behind you should still prioritize turrets. You probably won't win teamfights so you should farm and backdoor and only fight if there are ideal conditions.
tl;dr
The only point in the game where kills are more important than turrets is the early laning phase.