Sierra Vista Health Care Center, a nursing home in Loveland, CO received a 3 out of 5 overall rating from CMS of the Dept of Health and Human Services on March 18th 2015.
Touch typing is the ability to use muscle memory to find keys fast, without using the sense of sight, and with all the available fingers, just like piano players do. It significantly improves typing speed and eliminates errors. Touch typing simply makes you more productive and it is a skill worth learning.
I found the following book helpful to improve arithmetic speed: How To Calculate Quickly by Henry Sticker. It's a bit old but maybe that's just because Sticker nailed it and no-one can do better since. If you can stick to it for a few months that should finish it.