Sign up for Pinterest

So go ahead and sign up for Pinterest, creating a user name. If you create a new account rather than using Twitter or Facebook, Pinterest will ask you to confirm your email address.
Next, go to your email inbox and look for the confirmaiton message that Pinterest will have sent you.

It should contain a confirmation link that you must click on to go back to Pinterest.com and finish signing up.

Setting Up a Pinterest Username and Account -
Should You Use Facebook or Twitter?

If you don't want to createPinterest login, you must provide Pinterest with your login to either your existing Facebook or Twitter account, including your personal login name and password.
You can simply use one of those as your Pinterest login. One advantage to using your Twitter or Facebook login as your main Pinterest signin is that Pinterest will be able to help you connect with your Facebook or Twitter pals right away. Without that social network connection, you will essentially be starting over in building friends on Pinterest. Another advantage, of course, is it's easier to remember one login than two.
But there will be plenty of time to add Facebook and Twitter later. So it's a good idea to create a NEW Pinterest login and password, especially if you just want to check out Pinterest for a while before connecting with one or more of your other social networks. Pinterest is a very different kind of network, and you may want to connect with entirely different people.
As stated, you can always add your Facebook or Twitter IDs to your Pinterest profile later, by going into account settings and clicking the "on" button next to Twitter or Facebook. It's that simple.

Your Pinterest Username is part of Your Pinterest URL

Whatever Pinterest username you choose will form the unique URL or Web address for your Pinterest page, as in:
http://pinterest.com/skyurdu.
In each case, your username forms the last part of your URL. In this example, the user name obviously is sallybgaithersy. Pinterest will let you know if any particular user name you want is already taken.
You can easily change your Pinterest username or email address later by going into your account settings and typing a new one.
For more detailed information about user names and passwords, the Pinterest help section offers a simple FAQ on account signup and editing procedures.
During signup, Pinterest will helpfully suggest you create an image "board" or two where you can "pin" or save images once you get going. It's a good idea to accept the offer and click to create those boards. You can easily edit them later, giving them titles that reflect whatever purpose you may conceive, such as collecting visual ideas for a home decorating project or planned vacation.
Go and Enjoye