Free websites to practice typing

[ConqueringCollege]

Hi everybody, I would like a recommendation on a website or two where I can sign up free and learn to type faster, especially the numbers on the keyboard. How many minutes a day should I practice to get better? Thanks

I used this website.  (http://www.typeonline.co.uk/number_pad_lesson1.html) 

You don't even need to sign up -- it's completely free.  The recommendation on the page is to do the exercise at least three times and to take frequent breaks.  The lessons progress in difficulty.  They also have lessons on typing as well as numbers.