It's a .mobi file. You can transfer it to kindle in either of the 2 ways. 1) Connect your Kindle to computer and copy the book to documents folder in your Kind

It's a .mobi file. You can transfer it to kindle in either of the 2 ways. 1) Connect your Kindle to computer and copy the book to documents folder in your Kindle. 2) Send the .mobi file as an attachment in email to your Kindle specific email id. For incurring no charges, use the free.kindle.com id. Once you connect to Wi-fi next time, book will be transferred to your Kindle over the air.