You've bought good beans. The next job is not ruining them before you drink them. Storage is simple once you know what actually damages coffee.
The four enemies
Air. Oxygen stales coffee, slowly for whole beans and quickly for ground. Keep it sealed.
Moisture. Roasted coffee is dry and porous, and it soaks up humidity and any smell nearby. Damp coffee goes stale and can taste of whatever it sat next to.
Heat. Warmth speeds up every reaction that ages coffee. The shelf above the stove or a sunny bench is the worst spot in the house.
Light. Direct sunlight degrades the oils. Clear jars on a windowsill look nice and taste worse.
Why not the fridge or freezer?
The fridge is humid, full of smells and every time you open the door the beans warm up and condensation forms on them. Coffee absorbs both the moisture and the odours, so you end up with slightly damp beans that taste faintly of last night's leftovers. Don't.
The freezer is a little different. Freezing does slow staling, and it can work if you're buying in bulk and won't get through it in a month. The rules: freeze in small portions in airtight containers, and never return thawed coffee to the freezer. Take out a week's worth, let it come to room temperature sealed, then use it. If you're buying 250g or 1kg at a time and drinking it within a few weeks, the freezer isn't worth the hassle.
What good storage looks like
A cool, dark cupboard away from the oven. Either leave the coffee in its original bag, squeeze the air out and roll it down tight, or tip it into an opaque airtight canister. Buy amounts you'll finish in three or four weeks. That's it.
How long does coffee last?
Whole beans: at their best from about a week after roast to four or five weeks, and still perfectly drinkable well beyond that. Ground coffee: best within two weeks of grinding. The roast date is printed on every bag we sell, so you can work it out rather than guess. A "best before" date on supermarket coffee is usually a year out and tells you nothing useful.
Short version: sealed, dark, cool, and bought fresh in amounts you'll use. If you want a proper canister, there are a few in storage.