I have tried many programs but all of them are still in the experimental stage.
Note that at this moment (Oct 2015) NO PROGRAM has support for Kindle v5.6 +. I contacted developers of KDEasy and they quickly answered:
So far we don't see any possibility to support 5.6, Amazon blocked all
the solutions. Sorry for that. Regards, KDeasy Product Manager Bansha
So, a big f*** you Amazon and thank you for locking this possibility while you provide such a cumbersome GUI interface.
Here is a resource that may help you if you have a version below v5.6. It is quite well documented:
http://www.epubor.com/4-ways-to-create-and-manage-kindle-collections.html
Kindlian is a cool add-on for Kindle device and works on Windows
XP/Vista 7/8. It supports Kindle Keyboard&Kindle Black&Kindle Grey,
Kindle Touch, Kindle Paperwhite. The main function of this program
allows us to import and manage Kindle Books and collections.
First Download and install Kindlian for win. Plug your kindle into a
computer and run this program.
Step1: Choose your kindle version. (the follow step will take kindle
paperwhite as example.) Once you tap kindle paperwhite and press the
icon, the pop up screen prompts you to disconnect kindle.
Tap "Settings" from kindle menu-->"Upadate your kindle". Then
reconnect kindle with your computer. At last press "OK". Then it will
enter the scan mode and then the new interface appears.
Step 2: Create new collection. Click "+" and name your collection by
eBook author name, date, etc. Drag the books into the collection
folder which you create. And you can add epub books from your computer
to kindle device by clicking "Add files to Kindle" icon. Because it
will automatically convert epub books to mobi. But it will load DRM
epub books in failure. Download DRMed epub to mobi converter
alternative can help us make it. Download DRMed epub to mobi converter
alternative Windows Version Download Mac Version Download
Once you finish adding books to your destination collection, and click
"disconnect" icon. Then it will prompt you to disconnect your kindle
with computer.
When you disconnect your kindle with computer, tap
"Settings"-->"Update Your Kindle". At last, tap
"Settings"-->"Restart". Just for a while, the "kindle collection
test'' which I just create appears in my kindle paperwhite now.
Wonderful, I succeed in managing my kindle books.
Note: The Kindlian just offer Window version. As a mac user, Scida
offer us a way to organize eBooks and manage our kindle device. The
method 3 also works with non Amazon books