I uses a PDF reader but you can uses a online converter to covert to any format you need. On certain phones you need to find an app that supports PDFs. The free iBooks app supports PDFs and you can sync them via the Books tab when connected to your computer's iTunes. You can add PDFs to your computer's iTunes via File > Add Folder To Library, and they should then appear on the Books tab on the right-hand side of iTunes when the iPad is connected and selected on the left-hand side. There is also a free PDF Reader app from Adobe.