To invite someone to Wagn, click on the "Invite a Friend" link at the top of any page (you have to have an account and be signed in to see this link, if your Wagn is set up to allow you to invite people at all). Add the name of the person you're inviting — you can use their real name, or a nickname, whatever you like. They can always change it later, since renaming cards is easy. Add their email address; you can also edit the Subject and Message of the email they will receive, if you like. Click "Create" and their new account information will be sent to them immediately.