This grid set is designed to help users navigate the electronic books provided through the free Kindle for PC application and also read them outloud.
Kindle for PC can be downloaded from https://www.amazon.co.uk/gp/help/customer/display.html?nodeId=201245960
For reading outloud you will need a Screen reader installed. Kindle does support a few different ones but this grid set uses NVDA which you would need to download from http://www.nvaccess.org/download/
WARNING please note that Kindle does tend to update regularly and in the past the keyboard shorcuts and program location (where the program installs to) have changed. This would then mean that some minor changes would be required in the Grid. It is possible to turn off the Kindle Automatic updates in; Tools/Options/General and turn off automatic updates.