I have just returned from Mexico as a guest of Tequila Fortelaza. It was an amazing trip. I had such a great time but also learned so much about Tequila. 
Coincidentally, less than a week before the trip, I took a 6 Hour Tequila certification course sponsored by Hiatus Tequila and presented by the Tequila Regulatory Council or CRT. 
Listen to the Bartender Journey Podcast #291 for a Deep Dive into Tequila!
For this information in text form, see the blog post.