1 Answer

Not sure if you have Kindle 1 or 2...
....so here are two ways.

To delete content on Kindle 1

Connect the USB cable that came with your Kindle to a PC.When prompted, select "Open folder to view files using Windows Explorer." You should now see 3 folders named: "Audible, music and documents."
4) Open the "documents" folder. From the "View" menu in explorer, select "Details." so that you can see all file details -- in columns. Click on the top of the "Name" column to sort all of your documents by name. You should see two files for each book you have on your Kindle. The extensions for these files are ".AZW" and ".MBP" The AZW file will be the largest of the two. For each title you wish to remove, select both related files and delete them. Don't forget you can hold down the "Ctrl" key to select multiple items in the list...
9) Disconnect the USB cable from your Kindle. Turn the Kindle off, then back on. The deleted titles should now be missing from your Kindle home page.

It is much easier to delete the content on Kindle 2, scroll to the shaded line below the book you want to delete. Push the mouse button to the right and a menu will pop up - "Remove from Device" is the last option. Scroll to that choice, select and Voila!