Store the coffee in an airtight container in a cool, dry place. This one is easy. Grind your coffee to fit the coffee maker. Perculators use perc grind. Use a coarse or drip grind for a French Press.
Automatic machines use autodrip grind.
Melittas use a fine grind. Espresso machines use an espresso grind. That is easy to remember. There can't be enough said about clean equipment, soap and hot water. Coffee makers, grinders and utensils have to be maintained and cleaned just like any other.