Equivalent to "Program Files" folder?
I am coming from using Windows for years and soon to switch to mac. I was just wondering what is the equivalent to the Program Files folder found in Windows? After spending some time with osx at a local Apple Store the closest I could find were some folders within the Application folder. But many applications, such as Aperature or Chess, etc. were just the application with no folder that holds the files associated with the program. I just don't thoroughly understand the was osx works and would love to learn more. Thank you very much for any help and insight into this.