When my fingers hurt after too much time on the keyboard, I don't stress. That is for sure. All you do when your stressed is mess up!

When my fingers hurt after too much time on the keyboard, I normally twist my hands around, pop my neck and pop my fingers, and get back to typin! I am on a computer at work most of the day, and I come home and surf the web.

My tip to improve your typing speed is to feel for the "F" and the "J". As most know, those are the letters you feel for first on the keyboard. As time goes by, and you learn how to type without looking, you will not even really have to "feel" for the "F" and the "J" you will just learn the keyboard.
Good Luck, you will get it, it's easy as pie!(: