This is a good way to get an idea of what areas you need to illuminate or what objects you would like to accent. The easiest way to do this is by walking the area and then mapping it out on paper. You should make notes and sketches of what area you want to highlight and the type of lights that would best suit your needs. Position the lights on the ground corresponding to the placement on the diagram. Prior to installation, it is a good idea to walk through the area as done when drawing the diagram to ensure the location of the lights is correct.
Most lights come with a stake connected on one end to makes installation easy.
With firm pressure just push them into the ground. If the ground happens to be to hard, make a starter hole with a screwdriver or similar tool. Make sure you leave extra cable at the transformer and at each light. This will allow you to adjust your lighting in the future. Most lights today are connected very easily.