First: a definition....
Board (noun) A board is a set of pins. A board can be created on any topic, such as Cool Posters, Future Outfits, or a Wishlist. You can add as many pins to a board as you want.
Step 1: Create the Pinterest Board
Step 2: Name the Board
Tap the Title, Description, and Category options to add information about your board. When you're happy with what you have, tap the red Create button.
Step 3: Now that you have a Pinterest Board, you're going to need some pins.
Pin (noun): an image added to Pinterest. A pin can be added from a website using the Pin It button, or you can upload images from your computer, phone, or iTouch.
To add a pin using your iPhone, Android device, or iTouch, tap the Explore button located at the bottom of your screen.
Step 4: In the Search Box, type the name of: whatever it is you'd like to pin.
Step 5: When you find a picture you like, tap the Repin button.
Step 6: Choose the Board that you'd like to add the picture to.
Step 7: Tap the Repin button once again.
Step 8: Success! You will now see your latest pin on your board.