Use the kindle cloud reader to read kindle books on your laptop computer.
The link is: https://read.amazon.com
Log into your amazon account.
To save a kindle book to your computer, right click on the book cover image and select Download & Pin Book from the pop up menu.
You must remain logged in to your account to read books offline.
This will allow you to read kindle books offline using your web browser with the https://read.amazon.com link.