Go to the following for a tutorial on heart attack victim resuscitation:

 http://medicine.arizona.edu/spotlight/learn-sarver-heart-centers-continuous-chest-compression-cpr

This short video will show you exactly what to do if someone near you collapses and is presumably having a heart attack. You could save a life, or a friend/loved one you share this video with could save yours one day. This is the best demonstration I’ve seen, and the simplest explanation.