On your iPhone or iPod Touch, tap on the App Store icon to open the Apple App Store.
Tap Search from the icons across the bottom of the screen. Type 'Olive Tree Bible' into the search bar and tap 'Search' on the keyboard on your screen.
The free 'Bible - Daily Reading & Study Bible by Olive Tree' app should appear at the top. Tap 'Get' and 'Install'. You'll be prompted to enter in your Apple ID password and the app will start to download. You'll see a circle with a square in the middle. A darker line moves around the circle to indicate the download progress.
When the app has finished downloading, you can tap the 'Open' button on the app in the App Store. You can also go back to your home screen and tap on the Olive Tree app icon that has appeared.