Our best tips for the freshest coffee? Purchase the freshest beans available in whole bean form (this minimizes surface area exposed to oxygen) in a bag with a one-way valve. This will require the use of a home grinder just before brewing.
The ideal way to store the coffee beans once the bag has been opened is in a sealed glass jar, preferably one that does not allow sunlight to permeate. A less expensive option, and an even more efficient one, is to use a Ziploc! Simply press air out before sealing and storing away from direct sunlight. Another important tip: never freeze your beans! Freezing and then thawing disrupts the moisture balance in the bean and will not prolong the life of your coffee.