Backup your whole Home folder. It will have Addresses in it (/YourHardDrive/Users/YourUserName/Application Support/AddressBook/), Calendars (/YourHardDrive/Users/YourUserName/Library/Calendars/), Documents (/YourHardDrive/Users/YourUserName/Documents/), Music (/YourHardDrive/Users/YourUserName/Music/), etc.
The point is we can't read your mind on what you want to backup. Most of your data will be in your UserName folder, so you can find most of your data here. Explorer and figure out what you want to backup.