Changing the water/ice filter in a refrigerator is much like changing a lightbulb, with just a few extra steps.
Remove anything on the top shelf of the refrigerator that might be in the way of the filter. This allows for a much faster and easier process.
Open the new filter (required filter number can be found in your owner's manual or in or around the location of the filter) and place it in the housing, in the same position as the filter you removed.