There are several organizations and websites dedicated to defining the principles of open data and disseminating information on the subject. Below is a list of some fo the best resources you can explore to learn more about open data.
A project undertaken by the World Wide Web Foundation that calculates a global measure of how governments are publishing and using open data for accountability, innovation, and social impact. ODB offers a comprehensive report on the global state of open data, as well as country-by-country breakdowns.
A resource made available by Open Knowledge International with information on the legal, social, and technical aspects of open data as well as use cases in which open data has resolved issues and benefited communities.
Provides practical tips for publishing open data as well as a record of instances where open data has made a significant impact on people and communities.
A network of individuals passionate about openness. OKI encourages and coordinates with the network to assist with the open release of information. OKI also provides information on why open data is important, how to make data open, as well as case studies in which open data has yielded positive results.
The tool kit contains useful information on open data policies, resources, and best practices as well as new developments within the open data community.