For the best coffee, use beans kept whole in an airtight container. Grind them using any grinder that makes the grounds nicely consistent. For drip machines, a medium grind is perfect.
Place a coffee filter in your drip coffee maker and scoop coffee grounds into the filter and then add the salt on top.
Using filtered water if you can, pour water into the water reservoir, ignoring the lines on the machine if they are inaccurate.
Press start, or other corresponding button to initiate the cycle, then wait until the whole cycle is complete. Keep the brewed coffee in a thermos to avoid it burning on the warmer.