Nice instruction about representation of data as it relates to binary, base 10, hexadecimal and so on. http://www3.ntu.edu.sg/home/ehchua/programming/java/DataRepresentation.html
Working with Data
The Git-Mediawiki project is an extension of Git which allows you to clone/author your wiki from the comfort of your git terminal.
Miga
Yaron Koren wrote a cool data front-end called Miga http://migadv.com/usage/
Miga is a lightweight framework for displaying an intelligent client-side browsing interface around a set of structured data. It requires administrators to provide the bare minimum amount of information: one or more data tables, in CSV form; as well as schema information in a separate file using a lightweight syntax; and an optional listing of additional pages that the app should display, also using a lightweight syntax.