Free online Touch Typing Tutor is suitable for students of all ages, experiences and abilities. 

With Touch Typing Tutor you don't need to register or sign up.  You just arrive and start typing.  You don't need to set up an account with email and password to do the touch typing tutorials.  There is no restriction on which typing lessons you can do (though it is recommended that they are done in order).  There is also no time out and the website administrators will not contact you unless you first contact them.