Raspberry Pi can be used for many different things. Some projects for homebrewers include… Putting together a temperature controller, brew system automation and control and putting together a digital tap list for your kegerator using something like RaspberryPints. That project can be completed with or without flow meters to track pints served and beer remaining.
Raspberry Pi User Guide by Eben Upton. “The “unofficial official” guide to the Raspberry Pi, complete with creator insight. Raspberry Pi User Guide, 3rd Edition contains everything you need to know to get up and running with Raspberry Pi.” (keep reading)