Most eBooks are in pdf format. If you don't a pdf reader, you can download one for free at http://www.adobe.com
Open up your favorite web browser such as Google.com, Yahoo.com, etc... In the search box, type in the following keyword phrase, "Free eBooks" and "Free eBook Downloads". Click the search button to bring up a list of websites that allow you to download all types of free eBooks.
When the search brings up lists of free ebook websites, browse through a few of the listings to find completely free downloadable eBooks. On some eBook websites, you should be able to browse through various categories to search for specific types of eBooks that you can download for free.
Click on the Ebook or Ebook title that you want to download. Your eBook will be displayed. You should save the Ebook to your computer so that you can keep it and read it later if you want to.
If you want to download more specific free eBooks, do a more specific free eBook search. Open up your web browser again and type in "Free eBooks" along with the type of free eBook you are looking for. For example, if you are looking for free romance eBooks, your internet search should look like this, "Free Romance eBooks" or you can also try, "Free Romance eBook Downloads". This will bring up a more detailed search and should primarily bring up websites that allow you to download free romance ebooks.