Understand Licensing Rules
Step1
Wikipedia material is both copyrighted and licensed automatically for public use under the GNU Free Documentation License (GFDL). This is a copyleft license that allows readers to copy and distribute a work under the same GFDL. If you want to re-use material from Wikipedia, your first step should be to read Wikipedia's information on re-user's rights and obligations on Wikipedia's 'Copyrights' page (see the Resources section below).
Step2
Understand it is not necessary to request permission to copy any material registered under the GFDL. You should, however, read the text of the license on the Wikipedia 'Text of the GNU Free Documentation License' page.
Step3
Up to 100 copies of Wikipedia articles may be sold commercially without identifying the original source.
Step4
Wikipedia articles and illustrations are not owned by the Wikimedia Foundation.
Use Wikipedia Content
Step1
Open Wikipedia's 'Main Page' in your browser window. Click on 'Help,' then 'Policies And Guidelines' and 'Copyrights,' for full disclosure regarding how to request permission to use Wikipedia content.
Step2
Create a valid derivative version of an article by continuing the license under GFDL, acknowledging the authorship of the article and providing a 'transparent copy' of the material. A direct link to the Wikipedia article may be sufficient in some cases to meet the requirements for continued use of the information.
Step3
Recognize the necessity of abiding by the GFDL guidelines for any publications, articles, books or Web sites. All material must remain licensed for public use.
Step4
Understand that 'fair use' for Wikipedia images may not be the same outside the United States. Some countries require a specific license for using copyrighted works.
Prevent Copyright Issues
Step1
Understand Wikipedia's stand on copyright violations. Go to 'Main Page,' 'Help,' 'Policies And Guidelines,' Copyrights,' and 'Copyright Violations.'
Step2
Address issues regarding a copyright request by opening the Wikipedia 'Main Page.' Then go to 'Help,' 'Policies And Guidelines,' 'Copyrights,' and 'Copyright Problems.'
Step3
Explore the benefit of using Wikipedia content. Open the 'Main Page' and follow the links to 'Help,' 'Policies And Guidelines,' 'Copyrights,' and 'Public Domain-Fair Use.'
Step4
Find additional information by clicking 'Help' on the 'Main Page,' and then click 'Frequently Asked Questions.'