Licenses

Attribution-NonCommercial-ShareAlike 3.0 IGO (CC BY-NC-SA 3.0 IGO)

The licensor cannot revoke these freedoms as long as you follow the license terms.

Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
NonCommercial — You may not use the material for commercial purposes.
ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

When the Licensor is an intergovernmental organization, disputes will be resolved by mediation and arbitration unless otherwise agreed.
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

Share (BY) : Copy and redistribute the material in any medium or format. for any purpose.
Attribution (BY) : Re-users must attribute the work to the copyright holder when they use it.
ShareAlike (SA) : Re-users who create derivatives of the work must release the derivatives under the same license as the original work, if they choose to distribute the derivatives.
NonCommercial (NC) : The work can only be used for non-commercial purposes.