How to Join LinkedIn with an Invitation
Click Continue and choose your e-mail system.
LinkedIn offers to import your contacts from your e-mail program. If you see your e-mail system among the choices, select the radio button next to that system and then click the Login button. LinkedIn will walk you through the steps of importing your address book, offering you the chance to connect to existing members of LinkedIn. At this point, you can also just click the Skip This Step link and then come back and take care of this after you create your account.
It might be tempting to start inviting friends and colleagues to connect with you right away, but you might want to work on your profile or think of a strategy first before flooding people’s e-mail inboxes with Invitations. You can always invite people to connect with you at any time.