Originally Posted by Majorix
Can you load external .pdf's or .mobi's on your Paperwhite? This is an important matter to me, hope you can help.
EDIT: Just to clarify, I am talking about books you bought outside of Amazon's store. Maybe in the form of a converted .epub
Just to add , other than sideloading by connecting via usb and browser as AnemicOak pointed out, you can also send it to your kindle email address for the PW and take advantage of synchronisation across all your kindles and apps you may have registered to your account.