While iTunes will sync your iPhone and allow you to upload music, pictures and other documents onto your iPhone it will not allow for you to upload word documents or pdf files. However you can sync your iPhone with a number of e-mail services like Gmail or Hotmail and e-mail the desired documents to yourself so that you can access them on your iPhone. To set up an e-mail account on your iPhone touch the "Mail" icon on your home menu. If you are using a Microsoft Exchange, MobileMe, Gmail, Yahoo or AOL e-mail account touch the icon for the corresponding service. If you are using another provider touch the "Others" icon. The iPhone will then ask for you to provide your username and password, enter this information and press enter. The iPhone will then attempt to connect to your e-mail account with the information you provided.