This will be a 3 part series. The first covers the basic alignment. Now the only thing is this coach seems to switch the names/roles of the Will and Sam backers
http://www.youtube.com/watch?v=U1e3vvBnAgM
It's also helpful to know your letter gap designation and the number alignment designations.
GAPS:
(http://www.footballoutsiders.com/images/DLINE2.jpg)
ALIGNMENTS:
(http://www.footballoutsiders.com/images/DLINE1.jpg)