How to Turn on a Webcam on a MacBook Pro

Launch iChat. Select your account type from the drop-down menu if you are a first-time user. Type your screen name and password, and click 'Continue.'
Click 'Done' on the Conclusion page and your 'Buddy' list will pop up.
Bring up the iSight camera box by clicking on the 'Camera' icon at the top of your buddy list. Alternatively, go to 'Video' at the top of the iChat Screen, then select 'Video Preview.'
Click the 'Camera' icon next to an online buddy if you want to initiate a video chat session or conferencing call.
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