Calibre

• 1). Double-click the Reader Library application icon to launch the application. Click the "Library" tab at the top of the application window and click on the ebook whose title you want to change. Click the "More Actions" button and select the "Remove" option to remove the book from your Reader Library.
  
  
• 2). Open a Web browser and navigate to Calibre-ebook.com. Click the "Download Calibre" link, followed by the download link for your operating system of choice to download the install file. Double-click the install file and follow the onscreen instructions to install the application.
  
  
• 3). Double-click the Calibre application icon to launch the application. Click the "Add Books" button and locate the ebook on the computer's hard drive. Highlight the ebook and click the "Open" button to add it to Calibre.
  
  
• 4). Click on the ebook in the Calibre window to highlight it. Click the "Edit Metadata" button and type a new title for the book in the "Title" field. Click the "OK" button to save the changes.
  
  
• 5). Click the "Save to Disk" button, followed by the "Choose" button to save the ebook with its new title. Drag the modified ebook onto the Reader Library application window to add the ebook to your Reader Library.
  
  

Sigil

• 1). Double-click the Reader Library application icon to launch the application. Click the "Library" tab at the top of the application window and click on the ebook whose title you want to change. Click the "More Actions" button and select the "Remove" option to remove the book from your Reader Library.
  
  
• 2). Open a Web browser and navigate to code.google.com. Type "Sigil" in the search bar and click the "Search" button. Click the "sigil - A WYSIWYG ebook editor" option in the list of search results. Click the download link for your operating system of choice to download the install file. Double-click the install file and follow the onscreen instructions to install the application.
  
  
• 3). Double-click the Sigil application icon to launch the application. Click the "Open" button and locate the ebook on the computer's hard drive. Highlight the ebook and click the "Open" button to add it to the Sigil application.
  
  
• 4). Click the "Tools" menu and select the "Meta Editor..." option. Type a new title for the ebook in the space labeled "Title" and click the "OK" button.
  
  
• 5). Click the "Save" icon to save the ebook. Drag the modified ebook onto the Reader Library application window to add the ebook to your Reader Library.
  
  

EPUB Metadata Editor

• 1). Double-click the Reader Library application icon to launch the application. Click the "Library" tab at the top of the application window and click on the ebook whose title you want to change. Click the "More Actions" button and select the "Remove" option to remove the book from your Reader Library.
  
  
• 2). Open a Web browser and navigate to code.google.com. Type "epub metadata editor" in the search bar and click the "Search" button. Click the "epub-metadata-editor" option in the list of search results. Click the download link to download the install file. Double-click the install file and follow the onscreen instructions to install the application.
  
  
• 3). Double-click the EPUB Metadata Editor application icon to launch the application. Click the "Open" button and locate the ebook on the computer's hard drive. Highlight the ebook and click the "Open" button to add it to the Sigil application.
  
  
• 4). Type a new title for the ebook in the space labeled "Title." Click the "Save" button when you are finished to save the ebook with the new title.
  
  
• 5). Drag the modified ebook onto the Reader Library application window to add the ebook to your Reader Library.