For more deadllift info, or if the above video links don't work, go to crossfit.com and on the left nav bar, click on 'exercises & demos.' There are several videos under 'powerlifting.'
Don't worry too much about not being strong enough. If you can pick up something off the ground, if you can put your arms over your head, you can learn these. We've got lightweight PVC pipe and olympic bars starting at 35#. Come try it!