Turning off your iPad should be done when you are not using it for extended periods. This will save precious battery life .
To Turn off your iPad follow these steps
1) Press and hold the Sleep/Wake button on upper right edge of your iPad.
2) The iPad will then present you with the “slide to turn off” screen that will request you to slide your hand across and arrow to confirm total shut town. Slide your hand across the arrow to shut down your iPad
When you want to turn back your iPad, press and hold the iPad Sleep/Wake button for 3 seconds. The iPad will now power on. It will take about 20 seconds for the iPad software to load for normal use.