Quick question for Kindle owners. If I have a book in a Kindle format on my PC that works on the Kindle Reader for PCs, can it be transferred to an actual Kindle? Or do all Kindle books need to be downloaded via Amazon? I am working on a Kindle version of Get Out While You Can, but want to make sure the formatting is right. Easiest way is to buy a Kindle for myself, but don't want to if it isn't possible to transfer files to it from my PC.