im worried now?

You should lie awake all night in a pool of sweat. That is the only way through this.

Why is everything you post such idiocy? Kindles have lots of capacity. And if you don't want to fill up your library with user guides then stop downloading them moron. Or at least have the brains to delete them when you are done reading them.

No need to worry. The Paperwhite can hold thousands of text-type ebooks (less if they are picture books). When the front page of your home library fills up, it just makes more pages of library. You can swipe your finger from right to left to see each next lubrary page (if you have multiple pages). And from the home library page you can search for any of your Paperwhite books.

Because I am a shopaholic and bought tons of ebooks at Amazon when they were cheap or free on sale, I actually filled up an early Paperwhite which had less storage. It got really slow - I ended up resetting it to factory defaults so it was empty, registered it to my account again and redownloaded lots of my already-owned ebooks from Amazon (just a few hundred, not the nearly 2000 I had before the reset) and my Paperwhite was fast again.

Note - I use List View for my Paperwhite books - I don't need/want to see covers. Here is how to choose List View:

https://blog.the-ebook-reader.com/2019/01/25/how-t...

Most Kindles hold several thousand books, so there shouldn't be a problem. But all you have to do is delete the user guides. From the Home screen, select one by touching the cover for the guide and holding it. This should open a menu, and one of the selections is to delete it.

Amazon customer service is pretty helpful. Call them and ask how to delete old user guides.

Also you can probably remove the books from your device temporarily to free up space if needed. If it's similar to my Kindle Fire, you can always retrieve those books again later.