Using the Pinterest App on the iPad and iPhone

Downloading the app for the iPhone is the same as the iPad.
After downloading tap on the Pinterest icon on your home screen.
Navigate Pinterest from the bottom of the screen.
Check out the pins from the people that you are Following or just Explore pins for inspiration.

You will have two choices:
Take a picture with your iPhone to pin or
Tap the right hand side icon to select a picture from your iPhone Photos folder.

Choose a board and enter a description.
If you want to share your pin on Twitter or Facebook just tap the icon from off to on.
Tap the red (Pin It!) button located in the right hand corner to pin your pic.