I keep the beans in a sealed container. I only grind what I need, when I need it. Weigh out 17 grams of beans and grind. I use Dear Green myself. Beans stay fresher than ground so don't grind more than you need and you will have no waste. A lot of the smaller roaster support communities of farmers and the extra you pay goes towards education and healthcare. Always look for a roasted date on the packaging and try to get within a month to 6 weeks. A lot of supermarket beans only display a best before date so could be 6 months old when you buy.
I've had one of these for about 6 months now and its been great. Really not that hard to get to grips with and the results are infinitely better than capsules.
I keep ground beans in a sealed container for a few days and don't notice much difference. I use rave beans, if you don't have a burr grinder then select expresso grind. Lavassa would probably work well if you buy from a supermarket .... Just not freshly roasted!
any links to the type of coffee we need? for example if I just want to make one cup? is that possible than wasting beans? or can the grinded coffee remain to use at a later time as long as I can make espresso / laate I may give this a shot
Typical machines like this use between 7 grams and 9 grams per shot. My Gaggia I make a double with 17 grams. Nespresso capsules use 5 grams. Grind the beans just before you brew and you will get awesome coffee. I use an aergrind hand grinder, 17 grams takes around 15 seconds to grind. Well worth the effort. Using ethically sourced organic beans the cost is around 30p a double shot.