i just started Minecraft, and i saw that people where building computers. so when i went mining and found a lot of red stone i started building a computer.
i knew nothing about binary or circuits and was looking for a guide but their isn't one. so now that i know more i am starting a guide for building things with red stone
i will post pictures of my calculator soon.

good tools:

a list of the gates and how to make them.
http://www.minecraftwiki.net/images/c/cf/StandardLogicGates.png

a red stone simulator
http://www.mediafire.com/?l9999vxqeju1y12
(i did not make this)

files that are good to have in the red stone simulator

Files: 

schematics.zip