[tutorial book entitled *Copyleft and the GNU General Public License: A Comprehensive Guide and Tutorial*](/guide/).

### Getting Involved

There are various ways to get involved with this project.  The primary

copyleft.org website is a wiki, and we welcome additional information.

Please edit this wiki with more information about copyleft.

However, the primary project available on this site is the aforementioned

guide and tutorial about GPL and other copyleft concepts.  We seek

contributors.

This site is a joint project of

[Software Freedom Conservancy](https://sfconservancy.org) and

[the Free Software Foundation](https://fsf.org).  The editor-in-chief of

[the guide](/guide/) is [Bradley M. Kuhn](http://ebb.org/bkuhn).  The

[recent changes page](http://copyleft.org/recentchanges) shows who has

contributed to the wiki, and you can see the

[Git commit log on the tutorial](https://gitorious.org/copyleft-org/tutorial/commits/)

to see who has contributed to it.

### Offsite Resources