This is actually much simpler than it sounds. A good example that's easy to picture is pushing a car that's in neutral. When you start pushing it, it will move and in the direction you're pushing it (hopefully from the front or back because pushing it from the side would require an inhuman amount of force). The second part of the law is that the car will move/accelerate faster the harder you push it. The third part is, the heavier the car, the more force it takes to make it accelerate. For example, if you have a car that weighs 1 ton and another car that weighs 2 tons, the car that weighs 1 ton will accelerate twice as fast as the car that weighs 2 tons. I hope that will suffice!