I am brand new to Microsoft RMS and am currently building the database that will be home to 750+ beer, along with wine, sake, sodas, etc... To stay organized, track my inventory, and watch sales trends I'd like to set up three things:
Item Type (Beer, Wine, Sake, Soda, Food, etc...)
Country/State (State or Country)
Style (Style of Beer)
Now, to my questions... When I received training, I was instructed to put these as my subcategories, like I have done in the picture. 
Would it be smarter to make these Departments and Categories instead? Can I run a report or inventory list of only beers within a certain subcategory? Now that I am looking at the system, it seems like it may be smarter to set these up at Departments and Categories so I can track the sales/inventory easier. Please let me know before I get too much work done and have to backtrack too much!