SQL

This is currently one of the most popular languages to have under your belt.
SQL (pronounced sequel) was thought to stand for Structured Query Language but it apparently doesn't stand for anything. I think it's an odd combination of letters to not be an acronym.

Let's start with a simple sql statement:-
SELECT * FROM BOOKS

This statement is based upon the assumption that you have a table called BOOKS. When you execute the statement it will return every column and every row in the table.