Here is the location of many folders on your system and their purpose.
Users, /Users
Desktop, /Users/(user)/Desktop
Documents, /Users/(user)/Documents
Pictures, /Users/(user)/Pictures
Music, /Users/(user)/Music
Videos, /Users/(user)/Movies
Downloads, /Users/(user)/Downloads
Software data and preferences, /Users/(user)/Library
Fonts, /Users/(user)/Library/Fonts
Trash, /Users/(user)/.Trash
Installed softwares, /Applications