I strongly believe in open source development as well as the education, experience, and collaboration that acompanies any new project. I'm currently learning to develop Android apps and after some additional experience I would be glad to help others create apps as well.
As far as teaching, there are others that have already created websites that do a far better job of that than I could ever do. I've listed links to some useful sites on my resources page.
Ballistic Energy Calculator
(c) 2011 released under the GNU GPL v3.0
Taylor Knockout Factor with muzzle energy calculator
The purpose of this project is simply to learn the android platform and provide an app with a unique
Download the app from the Android Market for free.
Source available on github, here.