Touring the Sides of the iPad Exterior
On the right side of your iPad are the volume up and volume down buttons, as shown. Press the upper button to increase the volume; press the lower button to decreases the volume.
The Camera app uses the volume up button as an alternative shutter release button to the on-screen shutter release button. Press either one to shoot a picture or start and stop video recording.
On the left side of your iPad, if it’s a cellular model, you’ll find the SIM card tray.
Apple used to include a SIM card eject tool with iPads and iPhones. If you don’t have one lying around, you can straighten a paper clip and use it as a faux SIM card eject tool.