Hi Amira
There should be a Blue icon called App Store
on your iPad. Open it.
You will need to create an account with username, password & credit card details. Your username will be an email address so be sure to make a secure password as half or your details will be easy to figure out (email adrs)
The ICON looks like this
You can also use a computer to get to the Apple Store.
This is my preferred method as it also allows you to make a backup of your iPad. & gives you more detail on & about your iDevices.
Just use iTunes on your computer to get into the App Store.
Download for free if you don't have it. Then install.
https://www.apple.com/itunes/download
Good Luck
Try this - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.) No data/files will be erased.
If there's the possibility it was dropped, turn the iPad over and give it a HARD SLAP on the back. May take several slaps.
dropped iPad dropped my Ipad sideways the screen is only black and it wont turn on