If you set a password for the root user clear it away. Default for the root is nothing not that you can't have one but I just suggest you leave it blank if your just testing locally.
Go on google, and search for MySQL Front it's an application that helps you deal with your DB's without the console windown, and all the typing and stuff.
Once you get it and establish a connection on the Menu bar at the top go to Database>>New>>User and create a new user. Then use that login for when you want to test scripts, and things like that.