This guy knows his stuff (I think)
http://www.youtube.com/watch?v=RtlYi1yLTVQ
He also shows you the dangers of capacitors:
http://www.youtube.com/watch?v=rr7bPmGTQUk
high(ish) voltage:
http://www.youtube.com/watch?v=DQJ8JX17J58
and how to wire things correctly:
http://www.youtube.com/watch?v=vRwIrbK8KDI
http://www.youtube.com/watch?v=RtlYi1yLTVQ
He also shows you the dangers of capacitors:
http://www.youtube.com/watch?v=rr7bPmGTQUk
high(ish) voltage:
http://www.youtube.com/watch?v=DQJ8JX17J58
and how to wire things correctly:
http://www.youtube.com/watch?v=vRwIrbK8KDI