GS Typing Tutor supports multiple user, which means many people could use it on one computer, and every user has a typing account which stores user's preference and configuration data. You must have an account before logging on GS Typing Tutor.
To create your own typing account, just enter a name you want (e.g. your full name) into the field on the login window, and then click "Enter" to log on, a wizard will popup to ask you to create the account if you typed name is not existing in GS Typing Tutor.
If you would not like to see the login window in further, please check the option "Don't show this window again". You may uncheck the option again in the "Options".