A must watch for understanding Creative Commons and using content under Creative Commons licenses.
Creative Commons License and how it helps us share digital content (5:32 mins) by BrickPress (YouTube)
Creative Commons are licence themes that are used to licence works (music, artistic, literary, and video works), under the terms of each license. Creative Commons works are free to use as long as the licence terms are followed.
Creative Commons offers the following licenses with each theme having a specific icon.
Attribution (BY) - this licence requires the work to be attributed
No Derivatives (ND) - no adaptations, modifications, or alterations allowed, the work must be used as is.
Non-commercial (NC) - the work can only be used for non-commercial purposes
Share Alike (SA) - if you adapt or modify the work you must release the new work under a creative commons licence.
If you require any assistance with Creative Commons licenses contact firstname.lastname@example.org
There are also images on Flickr that could be considered a breach of copyright ensure the image(s) you wish to use are legal copies.
What you need to consider before using Flickr images:
Galleries and museums sometimes allow photography of the works within the gallery for personal purposes this means for your own home library of photographs. Galleries and museums don't usually hold copyright on works they exhibit.
Attribution is a core condition in all six Creative Commons licences. Consult the following to assist in referencing creative commons works.