So is your Android or IOS tablet. Amazon provides a free app that will all you to access and read any Kindle book. I’ve been using the Kindle app for years, and it works great on all of those devices (and my Windows 10 PC).
Now you can get a $3 credit for downloading the free Kindle app. Of course, it’s not paid directly to you — it’s a credit on your next Amazon purchase. And you can only get one $3 credit, but hey, if you want to buy a Kindle book (or anything else from Amazon) anyway, why not get $3 off?
One more detail: You have to use your phone or tablet to do the download. It’s not for your laptop or desktop PC.