What Kinds of Creative Commons Licenses Are There?
The great thing about CC licenses is that you can mix and match - pick the elements you want, and ignore the ones you don't want. The chart at right shows the various licenses on a scale from most open to least open. Here's a description of the various components.
0 – No rights reserved (Public Domain)
BY – Attribute (you must give attribution)
SA – Share Alike (you can reuse, but you must have the same or less restrictive license)
NC – Non-Commercial (no for-profit use allowed)
ND – Non-Derivative (can be reused but not modified)
C – Full Copyright (no CC license applied)