The files you receive when you purchase an eBook are MOBI and ePub, which can be read by most reading apps and devices, including Amazon's Kindle. We do not offer PDF versions of eBooks, for copyright reasons.
For Kindle, specifically, you can use the "Send to Kindle" feature to forward MOBI or ePub files directly to your Kindle device (or for reading on the Kindle app, which is available on Mac, PC, iOS, and Android).
More information on how to do that can be found here: https://www.amazon.com/gp/sendtokindle
If you have any issues with "Send to Kindle," I would recommend reaching out to Amazon's support team directly, as we cannot help with that directly.
Other alternatives you can try:
Mac: https://apps.apple.com/us/app/yomu-ebook-reader/id562211012
PC: https://www.microsoft.com/en-us/p/freda-epub-ebook-reader/9wzdncrfj43b?activetab=pivot:overviewtab
If you have any issues with "Send to Kindle," I would recommend reaching out to Amazon's support team directly, as we cannot help with that directly.
Other alternatives you can try:
Mac: https://apps.apple.com/us/app/yomu-ebook-reader/id562211012
PC: https://www.microsoft.com/en-us/p/freda-epub-ebook-reader/9wzdncrfj43b?activetab=pivot:overviewtab
Android: https://play.google.com/store/apps/details?id=com.faultexception.reader&hl=en_US&gl=US
(Please note that these are just recommendations and that you download and install at your own risk - contact your device manufacturer or the app creator if you need any help with these apps)
(Please note that these are just recommendations and that you download and install at your own risk - contact your device manufacturer or the app creator if you need any help with these apps)
I hope that answers your question! Let me know if you have any other questions, or need anything else at all.