When my fingers hurt after too much time on the keyboard, I...make sure to rest it first before a start working again, a little massage of warm lil may also help to relax it.

When my fingers hurt after too much time on the keyboard, I...tend to relax my fingers with war water and gently massage it.

My tip to improve your typing speed is to...
make sure you know what your talking about and know how to say it, so that they will understand what needs to be done.