Always leave room for coffee.
Coffee grinders are a necessary accessory for many coffee lovers. Many coffee lovers will tell you the best coffee is brewed from freshly ground coffee. Grinding your own coffee will require an extra step but the difference in flavor is well worth it. As discussed in How to Make Perfect Coffee coffee brewed from freshly ground beans will have more flavor as there is less flavor loss due to exposure to air, light and moisture. If it is not convenient to grind on a daily basis or every time you want to brew coffee, consider grinding every other day or on a weekly basis. You can grind coffee and store it in your freezer along with any whole bean coffee. There are two main types of coffee grinders, burr coffee grinders and blade coffee grinders.
A blade grinder is similar to the blender you probably have in your kitchen. It will use a blade to chop the coffee bean. For finer grind you simply chop longer and for coarser grind chop for shorter period of time. Overall time for grinding is anywhere from 5 to 30 seconds. Consult your coffeemaker owner's manual for their recommendation. If you've lost the manual try 5 seconds for a coarse grind for a plunger pot, 10-20 seconds for medium-fine grind and 25 seconds for very fine espresso grind. Determine the grind you need, consult these guidelines and you will know how to grind coffee.
The other type of coffee grinder is a burr grinder which actually crushes the beans as opposed to chopping them. Burr grinders usually come with dials or buttons already preset to give you the right grind, simply select the grind you want. Some are electric and others are powered by cranking a handle. A burr coffee grinder will probably yield a better grind as there is less chance of burning the beans since they are crushed and not chopped. A burr grinder will also yield a more consistent grind. With practice a simple blade coffee grinder will be fine, just take care not to over-grind.
Whether you use a burr or blade grinder you may use frozen, refrigerator or room temperature beans and only grind what you need. There is no need to thaw frozen beans or wait for refrigerated beans to warm before grinding. Simply place the coffee beans into the grinder and grind. Measure off the grinds into your pot. If you ground too much, simply store the unused ground coffee for use in your next pot. If the beans were removed from freezer or refrigerator store unused ground coffee in airtight container and place back in freezer or refrigerator. If the whole beans were at room temperature store unused ground coffee at room temperature in an airtight container.