MySql one of the most popular open source database management system that allows you to manage relational database. Since MySql open source, you can use MySql free and if you want, you can modify its source code as per your need.
This MySql tutorials gives you complete knowledge from basic to advanced level.
MySql is quite easy and simple compare to learn other database like Oracle and SQLServer. You become a MySql master in few days depending on your interest.
You can easily use MySql database for your websites on different plateform like Linux,Unix and Windows. MySQL is an essential component of LAMP stack, which includes Linux, Apache, MySQL and PHP.
The following reasons makes MySQL so popular: