How to sign up for Pinterest?

Pinterest is currently invite-only. You can request an invite from it or you can be invited by someone who is already a part of Pinterest.

When you receive an invite, you can register via Facebook Connect or connect through Twitter.
So to get invitation you have to follow some steps below:
Go to pinterest.com.

• On the top header, you will see " Request an Invitate" button (See the screenshot above).
• Click on "Request an Invite"
• Then one more screenshot appear. Type your mail address then click " Request Invitation"(See screenshot below)

 Then Pinterest will send mail and ask you to wait for invitation to be approved.
In the waiting time, you can enjoy taking a tour with Pinterest to see how Pinterest is attractive.