Hi, I am beginning to learn SQL but I wanted to know the difference of the following:

1. What is the difference between Microsoft SQL and MySQL?

2. if I am going to use MySQL, where am I going to download it free. and What do I need to design the database?

Are you going to use Mysql in Access?
If yes, this would be more difficult for you as compared with MS Sql as
Microsoft is promoting MS Sql for upsizing access.

Mysql (window version 5.1.36) could be downloaded free in
http://dev.mysql.com/downloads/mysql/5.1.html

I'm currently studying Mysql too.
It might be less powerful than MS Sql now but it is fast and small.
They have similar functions but with different syntax somehow.