This is a very popular question that many people who want their lawn to be healthy, greener, and more plush than the guy next door is bound to ask. There are two very important things that you need to know about using a fertilizer spreader. The first thing you need is a good understanding of what is going on with your soil, and if you haven't already, order a soil test online so that you will know what type of fertilizer ratio that will work best for YOUR soil condition. You can find more information about fertilizer and their ratios here.
Once you have educated yourself on which nutrients YOUR soil needs, you can then concentrate on the task of evenly distributing it with the help of a broadcast fertilizer spreader.