I love these solar path lights.  Simply remove the plastic over the top solar panel and remove the tab, then pull the spike from the bottom and reinsert it with the spike on the outside.  They are very easy to push into the ground.  I spaced them about 2 feet apart and there was plenty of light within that span.  The lights are a beautiful white light and they all come on just as it gets dark and go out just as the sun comes up in the morning.  I am very impressed with how much light each solar light provides.  I absolutely love the pattern the lights create on the ground due to the cut out pattern on the solar housing.  I love them so much I am definitely going to buy some more and use them as accent lights in my flower gardens.  I highly recommend these solar path lights, they all work perfectly and can be used in so many different ways.