D,
Backpacker and Johnm have given exactly the same advice I would offer. I have a couple of things to add: Low flying the runway is good, but do not do it at a high speed. In a Cessna 150 or 172, 90kts would be too fast, as you could bounce the nose wheel off the runway. This would be very not good. Fly at 60kts or so (10kts faster than stall speed) this will keep the nose higher, and assure that if you touch by unintentionally, it will be the mains that touch first, which will be entirely safe. This presupposes you're flying a nosewheel aircraft, taildragger rules are somewhat different, and beyond the scope of this advice.
Also, as you cross the threshold, there is a sudden urge to get the plane on the ground, so as to not float off the far end of the runway. Assuming that you've chosen a runway of appropriate length for the aircraft, if you cross the threshold at a suitably low altitude, and the correct approach speed, and you close the throttle shortly thereafter, you're not going off the other end of the runway, unless you add power again. Indeed, you should expect to not need brakes at all in most cases. With the power off, whether airborne, or on the ground, you're slowing down. If you're doing it in the air, so much the better, you're saving tire and brake wear, and really reducing the chance of damaging wheel shimmy. Remember, lift creats drag. If the plane is flying, there's drag to overcome. You want the drag to slow you down. Once you touch down, the lift is pretty well gone. So is all that drag you just had for free, so it might actually require more runway length to stop, and brakes wich you might have otherwise not needed. Also bear in mind, that you probably have better directional control in the air, than on the ground.
Don't be in a hurry to be on the ground! After all, you went to go flying right? Make the most of it! Hold it a few inches off for as long as you possibly can. Ignore the stall warning. If the stick is all the way back when you touch, you probably just did the best landing ever.
Don't let cocky pilots and instructors at the airport, in the cockpit, or even on forums like this bother you. Some are full of themselves. We were all new at this at some time in history! Just because someone is an instructor, or CPL, does not mean they have all of the answers. More likely the old time pilot is the one with the answers you need, even if they have a PPL....