Once free books are found, it is convenient to download it onto a kindle device if you have one. This particularly useful if you have an amazon account since it will be connected with devices and applications associated with that account. There are several ways to do this. The easiest way to download free books onto kindle is to email the document to the address associated with your kindle device. Also if you have a kindle app, you can send it to the email address associated with that app.
If you have drop box or some other cloud storage you can upload into onto the kindle from your computer. Another way is to attach your kindle e-reader to your computer and drag the document into the documents folder on the kindle e-reader screen. You can also use a Send to Kindle application that is available for desktops through mac and windows but also through internet browsers such as Chrome and Firefox.