According to Wikipedia, SQL is "is a programming language designed for managing data in relational database management systems (RDBMS). Originally based upon relational algebra and tuple relational calculus, its scope includes data insert, query, update and delete, schema creation and modification, and data access control."
Wait, what? Forget that -- simply put, SQL is what you use to pull massive amounts of data out of a database. And, according to this blog post from Udemy, "it’s been one of the greatest skills I could have ever acquired as a marketing / business guy at a startup."
This class is intended for those with absolutely no SQL experience whatsoever. By the end of the class you'll be able to write basic to intermediate queries, which means you'll be able to go get the raw data for yourself. All you need to bring is a laptop -- we'll practice SQL using a web-based database.
(Note: SQL is a language used in MySQL, Oracle, Postgres, etc. Each system implements SQL slightly differently, but the basic queries we'll be covering will work on any of these systems.)
I taught myself to code in high school, then majored in computer science (and TA'd intro to CS) in college. Then I forgot most of it. Then I started coding again and got most of it back. Also, I love to teach.