I am a pretty quick reader but when I flip through pages I start to see "Ghost" images of the previous pages. When I restart the device it fixes the issue, but its really annoying to restart so much. Are there any tricks anyone has found to address this?
The User Guide on your device will explain everything.
you can set page refresh in settings. By default, the page only completely refreshes every 6 pages (may be more?...) but you can change this to refresh every page if you wish. Note that doing so will decrease battery life comsiderably. There is no need to restart your device.
e-ink devices only change what has changed between pages whuch can leave a ghost imprint after a while of what went before. When the screen completely refreshes it redraws the whole screen. This latter obviously uses more battery power.