candlestick-kid

So I am totally new to this world of gaming with emulators. I have been watching videos to slowly learn and I got the launchbox premium (Big Box?) Still not sure the difference and how that works. So it was working until I did the update yesterday, so I uninstalled everything and decided to try again from the beginning reinstalling Launchbox but after it downloads it just looks like an icon that can't be opened or done anything with. I tried seeing if I could unzip but it doesn't look like its a zip file to do so. Any help for this clueless guy would be great. I may be over my head trying to do this but finally figured out where to get roms and trying to figure out retroarch so I can download emulator cores etc. Thanks!