Of Course, It looks very simple. I am still very happy to do it again.
1.join in your amazon account, click here
click sign in, then, write your email and password.
tips: if you without amazon account .please click Create your Amazon Account .
2. From Your account ,click Manage Your Content and Devices
3. search bar search keywords “paperwhite”
select Kindle paperwhite user’s Guide,9th Editon
then. click 发送
select your Kindle Device, for example :my third Kindle ,then, click 发送
Then, Tips. “Kindle paperwhite User’s Guide,9th Edition (English Edition )”
4.Open my Kindle paperwhite Device, click settings icon，then,click Sync My Kindle ,
congratulation. send success . click Kindle paperwhite User’s Guide,9th Edition start Read .
if you want to learn more Kindle paperwhite knowledge, i recommended you visit Kindle Beginner’s guide （2018/11/30 update）.