Apple added the "Books" section to iTunes in the spring of 2010, providing users the means to save digital books to their iTunes library and iOS devices. Digital books are distributed in various formats such as LIT, PDB, EPUB and PDF. Although Apple's iBookstore only sells digital books in the industry-standard EPUB file format, iTunes allows users to add PDF files to their library. The process of transferring digital books to iTunes works the same as adding songs to your music library. Once transferred, the digital books are found in the "Books" section, which is accessed through the left sidebar of the iTunes window.
Launch iTunes on your computer.
Click "File" in the menu bar of the iTunes application window and select "Add to Library."
Find the EPUB or PDF file you want to transfer to iTunes using the "Add to Library" dialog window. Highlight the filename and click the "Choose" button to add the file to your iTunes library. The location of your digital book will depend on where you saved it. If you downloaded the file through your Web browser, look for the digital book in your default "Downloads" folder or "My Documents."
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