How to Understand Offensive Line Terminology

Understanding how offensive linemen communicate is key. What is the "A" gap? What is a 1-technique? Or a down block?
In this video Coach Simpson walks through offensive line 101 - understanding the terms used for the offensive line.
Coach Simpson has served at three schools as the Head Football Coach: Searcy High School, a 6A school in Arkansas for 2020. Before Searcy, he was the Head Football Coach at Southside Charter. Taking over a program that had won eight games in five seasons and had been on a 20+ game losing streak, Simpson has led Southside to the playoffs for four-consecutive seasons and won two conference titles in the past three seasons. For his efforts, he was named 4A-2 Conference Coach of the Year (2017), named to the as a finalist for Hooten's Coach of the Year (2017) and has been the All-Star Nominee for the 4A-2 (2016 and 2019). He was also selected to coach in the 1st FCA Texas-Arkansas All-Star Showdown (2021).
Contact info
Twitter - @fbcoachsimpson
Email - [e-mail]
His Gun-T System can be found - coachtube.com/bundles/gun-t-r...
His Defensive Materials can be found - coachtube.com/bundles/full-sy...
Coach Simpson wrote his first book in 2019. He has since released 9 other books. Find A Way: What I Wish I'd Known When I Became A Head Football Coach, he has been a four-time best seller on Amazon in several categories.
Books can be found - www.fbcoachsimpson.com/downloads
His offense is now run across the globe in not only the United States, but also in South America, Africa, Japan, Europe and Australia. He has helped to install the Gun-T system in many schools over the past 2-years.
Simpson has also raised over $1.5 million for Southside and has overseen several major facility projects including: New Field Turf, Expansion to Fieldhouse, Expansion to the school's home bleachers, and the addition of a press box and a new video-board.
Prior to coming to Southside, Simpson took over as Head Coach at Alabama Christian Academy in Montgomery, Alabama. During his tenure there, Simpson took over a team that had been 4-18 and led them to their first home playoff game in over 20-years. For his efforts he was named Montgomery Advertiser's All-Metro Coach of the Year as well as being voted 4A Region 2 Coach of the Year (2010). Simpson also served as the head track coach at ACA and led the girl's and boy's teams to multiple top 10 finishes in 4A.

[@steveosborn7224]

Stupid question, but with the numbering system do the numbers remain the same on the left side of the center? So it would look like
4-2-0-2-4-6 on the down? And the same for the gaps C B A A B C D?

[@kennysimpson6282]

Yes they would repeat right/left sides