The objective of a proper grind is to get the most flavor in a cup of coffee. How coarse or fine the coffee is ground depends on the method by which the coffee is to be brewed. Generally, the finer the grind the more quickly the coffee should be prepared. That is why coffee ground for use in an espresso machine is much finer than coffee which will be brewed in a drip system.
Take a moment to look carefully at the beans. Smell their aroma. Think of the many processes that these beans have gone through since the day they were hand-picked and sorted in their origin country. Consider the long way they have traveled to your kitchen. Prepare your coffee thoughtfully and enjoy it with pleasure. Many people have been instrumental in bringing it to your cup!