I only did one or two of the Mr Beer kits before I branched out, but that’s how I started. I received the starter pack as a gift and then picked up more of the refill kits at one of the kitchen stores at the Outlet mall. I think it’s called Kitchen Connection?
A couple of years ago they had 5 or 6 “styles”, they probably have more now. They are simple but they work.
Mr Beer is an option, I think they are made by Cooper’s, but I’m looking for several different brands: Coopers, Munton’s, Brewferm, Mountmellick, John Bull etc. to compare.