YouTube is a great resource if you want an audio/visual tutorial for Magic The Gathering. While I can’t say I scoured the web for the best, I can say I found a couple with good presentations with host(s) having good communication skills.
The following is catered for those who have no clue what Magic The Gathering is. It is part 1 of a multi-part video series. Filmed in documentary style, they take their time explaining the game, its cards, nomenclature, and mechanics. It’s very well done.
The next video presents itself as a video game. It’s far more effective demonstrating with computer graphics than literal cards laid on mats. It goes over the basics and recommended for those who just played their first few games. For beginners, it helps retain what you have recently learned.