How to delete ebook, purchased from Amazon, that's on my Kindle reader on my IPad?

SOURCE: How do I use my new Amazon kindle?

Go to link below for manual

http://s3.amazonaws.com/kindle/Kindle_User_Guide.pdf

SOURCE: Brightness on my Kindle Touch 3G

The Kindle 3G using E-Ink does not have a backlight therefore there are no brightness controls provided which in turn helps to increase the battery life.

If you need to have a reading light when using the Kindle then you will need to purchase one of the many clip-on LED reading lights that are available on the Amazon and other web sites.

SOURCE: i need to reset my amazon kindle

You can enter the password as "resetmykindle" in place of your lost or forgotten password and this will reset your kindle for you.

Doing the above will delete all the content from your Kindle and will also deregister the device so once complete you will need to go to the Kindle Support web site and register the Kindle and transfer any purchases back to the device.

SOURCE: amazon kindle reader reset

To perform a hard reset of the Kindle just press and hold the power on button for 20 seconds as described in the Kindle Support web site for dealing with Frozen devices.

If you want to reset your Kindle back to Factory defaults then you would need to press the Menu button, then go into Settings and you will find an option there to Reset to Factory Defaults.

SOURCE: kindle is stuck in the Amazon.com kindle store can't get out

Hold the power button to the right for 30 seconds. (Time them- not "One thousand one, one thousand two, ect." because this isn't precise enough.) This will reboot the Kindle and it should work. The reboot may take a while if it has been a long time since your last reboot.