How to send Google Plus Invitation

I recently joined Google Plus after receiving invitation from a friend. Google plus is currently under beta phase and you can join Google plus only via invitation. However, Google plus teams says it will be open for all soon and you can join Google plus without any invitation.

An already member of Google plus can send unlimited invitations to friends / family members etc. Only requirement to join Google plus is an invitation and a Google Account.

If you are a member of Google Plus, here is how you can send invitation to others.

Login in Google Plus at https://plus.google.com
Click Circle button.
This will open your account circle page. Click “Add a new person” box.
Enter Email ID to whom you want to send invitation. Its better you use a Gmail / Google account email ID.
Select a circle for new person and click save button.
If that person is not on Google plus, you will get a green button notification at bottom of page asking to send invitation.
Click invitation green button to send invitation.